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  • Biodiversity change behind wide applications of nanomaterials?
    Nano Today (IF 17.476) Pub Date : 2017-09-20
    Ming Chen, Xiaosheng Qin, Guangming Zeng
    更新日期:2017-09-21
  • Nanomaterials to microplastics: Swings and roundabouts
    Nano Today (IF 17.476) Pub Date : 2017-09-19
    J.J. Scott-Fordsmand, J.M. Navas, K. Hund-Rinke, B. Nowack, M.J.B. Amorim
    更新日期:2017-09-21
  • Thermosensitive nanomedicines could revolutionize thermal therapy in oncology
    Nano Today (IF 17.476) Pub Date : 2017-08-14
    Michael Dunne, Kullervo Hynynen, Christine Allen
    更新日期:2017-08-18
  • Design of nanocarriers based on complex biological barriers in vivo for tumor therapy
    Nano Today (IF 17.476) Pub Date : 2017-08-09
    Junjie Liu, Menghuan Li, Zhong Luo, Liangliang Dai, Xingming Guo, Kaiyong Cai
    更新日期:2017-08-10
  • Evolution and clinical translation of drug delivery nanomaterials
    Nano Today (IF 17.476) Pub Date : 2017-08-02
    Shabir Hassan, Gyan Prakasha, Ayca Bal Ozturk, Saghi Saghazadeh, Muhammad Farhan Sohail, Jungmok Seo, Mehmet Remzi Dokmeci, Yu Shrike Zhang, Ali Khademhosseini

    With the advent of technology, the role of nanomaterials in medicine has grown exponentially in the last few decades. The main advantage of such materials has been exploited in drug delivery applications, due to their effective targeting that in turn reduces systemic toxicity compared to the conventional routes of drug administration. Even though these materials offer broad flexibility based on targeting tissue, disease, and drug payload, the demand for more effective yet highly biocompatible nanomaterial-based drugs is increasing. While therapeutically improved and safe materials have been introduced in nanomedicine platforms, issues related to their degradation rate and bio-distribution still exist, thus making their successful translation to clinical application very challenging. Researchers are constantly improving upon novel nanomaterials that are safer and more effective not only as therapeutic agents but as diagnostic tools as well, making the research in the field of nanomedicine ever more fascinating. In this review stress has been made on the evolution of nanomaterials that are under different stages of clinical trials or have been approved by the United States Food and Drug Administration (FDA).

    更新日期:2017-08-03
  • Boosting the capacitance and voltage of aqueous supercapacitors via redox charge contribution from both electrode and electrolyte
    Nano Today (IF 17.476) Pub Date : 2017-07-22
    Jee Y. Hwang, Maher F. El-Kady, Mengping Li, Cheng-Wei Lin, Matthew Kowal, Xu Han, Richard B. Kaner

    Supercapacitors are evolving into an important component in energy storage technology with the capability for storing and discharging energy very quickly and effectively. State-of-the-art supercapacitors feature activated carbon electrodes impregnated with a non-aqueous electrolyte (typically acetonitrile) that operate at voltages between 2.2–2.7 V. Unfortunately, activated carbons have low specific capacitance (100–120 F g−1) in organic electrolytes which severely limits the energy density of supercapacitors. In addition, organic solvents are often flammable leading to safety and environmental concerns. Aqueous electrolytes, on the other hand, are safer, cheaper and have higher ionic conductivity, promising higher capacitance electrodes. However, the low voltage window enforced by the low decomposition voltage of water around 1.23 V is a major challenge. Here, we demonstrate symmetric supercapacitors operating at an ultrahigh voltage of 1.8 V that can provide specific electrode capacitances up to 716 F g−1, which is higher than traditional activated carbon electrodes. This is possible through designing both the electrode and electrolyte to work synergistically towards improving not only the capacitance of the electrodes, but also the voltage and cycling stability of the supercapacitor. We also demonstrate by using a simple laser technique the possibility of fabricating micro-supercapacitors with great potential for miniaturized electronics. This work provides an effective strategy for designing and fabricating aqueous supercapacitors that hold promise for a sustainable energy future.

    更新日期:2017-07-24
  • Icosahedral nanocrystals of noble metals: Synthesis and applications
    Nano Today (IF 17.476) Pub Date : 2017-07-22
    Helan Wang, Shan Zhou, Kyle D. Gilroy, Zaisheng Cai, Younan Xia

    Icosahedral nanocrystals of noble metals have received ever increasing interests in recent years owing to their unique features such as the size-dependent distribution of strain fields and the presence of a large number of twin boundaries. In this review, we start with a brief introduction to the strain field distribution on an icosahedral nanocrystal and then we discuss the size-dependent structural thermodynamics, together with remarks on the synthetic approaches to icosahedral nanocrystals of various noble metals in high purity. The recent breakthroughs in synthesis can be attributed to a strong correlation between the kinetics of reduction and the way atoms are assembled in nuclei during homogenous nucleation. We aim to provide a brief account of new developments while highlighting the key experimental parameters that give rise to icosahedral nanocrystals. We focus on monometallic systems based on Au, Ag, Pd, Pt, and Rh, along with some bimetallic systems. At the end, we showcase the performance of icosahedral nanocrystals towards catalytic and photonic applications, and offer some perspectives on future directions.

    更新日期:2017-07-24
  • Nanocomposite makes printing glass a synch
    Nano Today (IF 17.476) Pub Date : 2017-07-08

    更新日期:2017-07-09
  • Nanoparticle doubles-up tumor targeting
    Nano Today (IF 17.476) Pub Date : 2017-07-08

    更新日期:2017-07-09
  • 3D printed functional nanomaterials for electrochemical energy storage
    Nano Today (IF 17.476) Pub Date : 2017-07-05
    Cheng Zhu, Tianyu Liu, Fang Qian, Wen Chen, Swetha Chandrasekaran, Bin Yao, Yu Song, Eric B. Duoss, Joshua D. Kuntz, Christopher M. Spadaccini, Marcus A. Worsley, Yat Li

    Electrochemical energy storage (EES) devices, such as lithium-ion batteries and supercapacitors, are emerging as primary power sources for global efforts to shift energy dependence from limited fossil fuels towards sustainable and renewable resources. These EES devices, while renowned for their high energy or power densities, portability, and long cycle life, are still facing significant performance hindrance due to manufacturing limitations. One major obstacle is the ability to engineer macroscopic components with designed and highly resolved nanostructures with optimal performance, via controllable and scalable manufacturing techniques. 3D printing covers several additive manufacturing methods that enable well-controlled creation of functional nanomaterials with three-dimensional architectures, representing a promising approach for fabrication of next-generation EES devices with high performance. In this review, we summarize recent progress in fabricating 3D functional electrodes utilizing 3D printing-based methodologies for EES devices. Specifically, laser-, lithography-, electrodeposition-, and extrusion-based 3D printing techniques are described and exemplified with examples from the literatures. Current challenges and future opportunities for functional materials fabrication via 3D printing techniques are also discussed.

    更新日期:2017-07-08
  • Strategies for developing transition metal phosphides as heterogeneous electrocatalysts for water splitting
    Nano Today (IF 17.476) Pub Date : 2017-07-05
    Yang Wang, Biao Kong, Dongyuan Zhao, Huanting Wang, Cordelia Selomulya

    Transition metal phosphides (TMPs), as non-precious metal compounds, have attracted growing interest as heterogeneous electrocatalysts for overall water splitting. They have been studied as robust catalysts for hydrogen evolution reaction (HER) at a wide pH range. In particular, Fe, Co, Ni-based phosphides also showed high performance for oxygen evolution reaction (OER) in alkaline solutions. This review focuses on the strategies developed for preparing TMPs with enhanced HER or OER performance. These strategies include tuning the stoichiometric ratio of metal and phosphorous, hetero-atom doping or alloying, forming nano-carbon/TMPs hybrids and engineering special structures by modifying surface wettability, forming hetero-structure interfaces and generating porous structures. In terms of elemental doping strategy, the reported performance of Fe, Co, Ni-based alloying phosphides as bifunctional catalysts for both HER and OER are also summarized. Finally, the challenges and perspectives for TMPs in water splitting application are briefly discussed.

    更新日期:2017-07-08
  • Wettability effect on nanoconfined water flow: Insights and perspectives
    Nano Today (IF 17.476) Pub Date : 2017-06-03
    Hongbo Zeng, Keliu Wu, Xin Cui, Zhangxin Chen

    Nanoconfined water flow plays a critical role in numerous engineering and industrial applications such as nanomedicine, nanofluidics, tribology, water purification, and energy storage and conversion, which has received tremendous research interest. A practical model has been developed that correlates the surface wettability, nanopore dimensions and confined water flow, though the essential physics still remains incompletely understood. The behaviors and flow of nanoconfined water and boundary conditions are fundamentally determined by the intermolecular interactions between water and the nanopore walls. The potential interdisciplinary significance and directions of this research field are discussed.

    更新日期:2017-07-05
  • Editorial Board & Aims and Scope
    Nano Today (IF 17.476) Pub Date : 2017-06-03

    更新日期:2017-07-05
  • Graphene sieve ions out water filtration
    Nano Today (IF 17.476) Pub Date : 2017-05-05

    更新日期:2017-07-05
  • Nanoparticle switches off blood vessel growth
    Nano Today (IF 17.476) Pub Date : 2017-05-19

    更新日期:2017-07-05
  • X-ray imaging of microchips fills the gap
    Nano Today (IF 17.476) Pub Date : 2017-05-05

    更新日期:2017-07-05
  • 3D nanoparticle structures emerge from the fog
    Nano Today (IF 17.476) Pub Date : 2017-05-19

    更新日期:2017-07-05
  • Tethered nanoparticles charge ahead
    Nano Today (IF 17.476) Pub Date : 2017-05-19

    更新日期:2017-07-05
  • Piezoelectric nanotransducers: The future of neural stimulation
    Nano Today (IF 17.476) Pub Date : 2016-12-14
    Attilio Marino, Giada Graziana Genchi, Virgilio Mattoli, Gianni Ciofani

    Piezoelectric materials, i.e., those materials able to convert mechanical into electrical energy and vice versa, have found extremely wide applications in the fields of robotics, energy conversion, and medicine. Scaling down to the “nano” world, piezoelectric materials have attracted strong interest in nanomedicine as nanotransducers able to act at the tissue, cellular, and sub-cellular level. Applications of “smart” piezoelectric nanomaterials are particularly appealing for all electrically excitable structures of an organism, starting from the nervous tissue. Here, we summarize the most recent evidences and the most exciting perspectives that the piezoelectric transduction approach provides in the field of neuronal stimulation.

    更新日期:2017-07-05
  • Controlling water transport in carbon nanotubes
    Nano Today (IF 17.476) Pub Date : 2017-01-06
    Kunli Goh, Yuan Chen

    Water transport inside carbon nanotubes (CNTs) shows a wealth of unique nanofluidic phenomena, which can be exploited as solutions for many global challenges. However, translating this potential into practical applications remains questionable to date. Recently, a work by Secchi and coworkers provides confirmatory evidence of radius-dependent water slippage inside an individual CNT. This article therefore puts into perspective two key takeaways, namely, nanoconfinement and electronic structures of CNT, as promising approaches to control ultrafast water transport inside CNTs.

    更新日期:2017-07-05
  • Nanostructures based on protein self-assembly: From hierarchical construction to bioinspired materials
    Nano Today (IF 17.476) Pub Date : 2017-05-16
    Hongcheng Sun, Quan Luo, Chunxi Hou, Junqiu Liu

    Sophisticated protein self-assemblies have attracted great scientific interests in recent few decades due to their various potential applications in substance/signal transmission, biosensors, or disease diagnosis and treatment. The design and construction of proteins into hierarchical nanostructures via self-assembly strategies offer unique advantages in understanding the mechanism of naturally occurring protein assemblies and/or creating various functional biomaterials with advanced properties. This review covers the recent progress and trends in the self-assembled hierarchical protein structures and their bio-inspired applications. We initially discuss the design and development of sophisticated protein nanostructures through the preciously designed protein–protein interactions. Many intricate protein nanostructures from quasi-zero dimensional (0D) polyhedral cages, one-dimensional (1D) strings/rings/tubules, two-dimensional (2D) crystal sheets/cambered surfaces, and three-dimensional (3D) crystalline frameworks/hydrogels, have been constructed through self-assembly of rationally designed proteins. In addition, we also show the representative achievements in the study of the structure–function relationship for selected protein self-assemblies and highlight the latest research progress in developing artificial light harvesting systems, biological nanoenzyme mimics, intelligent protein nanocarriers, biomimetic protocells, and so on. As expected, protein self-assembly has become a powerful tool for development of multifarious bioinspired materials with advanced structures and properties.

    更新日期:2017-07-05
  • Water splitting dye-sensitized solar cells
    Nano Today (IF 17.476) Pub Date : 2017-05-15
    Pengtao Xu, Nicholas S. McCool, Thomas E. Mallouk

    Research in artificial photosynthesis is driven by the goal of creating low-cost, integrated systems for the direct conversion of solar energy to high energy density fuels. Water-splitting dye-sensitized solar cells can in principle leverage the successful architecture, spectral tunability, and high quantum efficiency of regenerative photovoltaic dye cells toward this goal. In this article, we review the current development of both dye-sensitized photoanodes and photocathodes for water splitting. A detailed discussion of the individual components of photoanodes and photocathodes – semiconductors, sensitizers, and catalysts – is presented. We review experiments on the electron transfer kinetics that control the efficiency of water splitting, and highlight recent research on electrode architectures that can improve both the efficiency and stability of water-splitting dye cells.

    更新日期:2017-07-05
  • Neural interfaces engineered via micro- and nanostructured coatings
    Nano Today (IF 17.476) Pub Date : 2017-05-19
    Nuan Chen, Lingling Tian, Anoop C. Patil, Shengjie Peng, In Hong Yang, Nitish V. Thakor, Seeram Ramakrishna

    During the past decade, neural interfaces have attracted great interest due to their potential of body-machine communication for disease diagnosis and therapy. Considering the significant material mismatch between the electrode implants and the native tissue, a thin coating is employed on the electrode sites as an intermediate layer to bridge the material differences and has been proved to play an important role in the promotion of neural cell attachment and signal transmission. Micro- and nanostructured coating materials, together with surface functionalization such as biological cues, provide not only high surface areas for signal transduction but also a biomimetic platform for the cells. In this paper, we review the performance of different kinds of micro- and nanostructured coating materials including metallic materials, carbon materials, conducting polymeric materials and composite materials and then complement the discussion with the influence of the fabrication process on the performance of the coatings. The coating could be functionalized by various advanced techniques, which are also reviewed. The existing challenge and future research directions of electrode coatings are briefly discussed at the end of the review.

    更新日期:2017-07-05
  • Extra- and intra-cellular fate of nanocarriers under dynamic interactions with biology
    Nano Today (IF 17.476) Pub Date : 2017-05-19
    Seog-Jin Seo, Meiwan Chen, Hongxia Wang, Min Sil Kang, Kam W. Leong, Hae-Won Kim

    Synthetic nanocarriers continue to play an important role in nanomedicine as the next generation of therapeutics demands effective intracellular delivery. Better understanding of the extra- and intra-cellular fate of the nanocarriers in relation with biological environments in vitro and in vivo is essential for the progress of nanocarrier-based therapeutics. As nanocarriers come into contact with biological fluid, interactions with various biomolecules alter their initial physicochemical status. Such dynamic modifications influence their interactions with cells and the subsequent endocytic process. Upon cellular uptake, intracellular machineries control their trafficking, release and degradation of cargoes, and exocytosis. In this Review, we highlight the navigation of nanocarriers through various extra- and intra-cellular barriers, with an emphasis on how dynamic interactions with biological components alter their fate and performance.

    更新日期:2017-07-05
  • Self-assembly and morphological control of three-dimensional macroporous architectures built of two-dimensional materials
    Nano Today (IF 17.476) Pub Date : 2017-05-19
    Ji-Eun Kim, Jung-Hwan Oh, Moumita Kotal, Nikhil Koratkar, Il-Kwon Oh

    The three-dimensional (3D) macroscopic assembly of tailored porous architectures built of graphene derivatives or other two-dimensional (2D) materials has attracted great attention in both academia and industry. The reason being that such 3D assemblies with controlled morphology can provide ultra-large accessible surface areas and interconnected networks, as well as preventing the undesirable re-stacking phenomena of 2D materials. Herein, we review the synthetic routes and formation mechanism of bulk gel and interface mediated 3D architectures made of diverse 2D materials encompassing both graphene derivatives and non-graphene 2D materials. We also suggest universal strategies that can provide useful insight into application-oriented architecture design. The gelation mechanism is explained in detail; it involves controlled destabilization of the suspension involving a delicate balance between attractive and repulsive interactions. Further, interface mediated self-assembly processes between liquid-solid, liquid-liquid, liquid-gas, and ice-water phases are discussed with a view to tailoring 3D layered and interconnected morphologies. Finally, we highlight the demand for future applications of 2D material-based 3D macroporous architectures. Despite recent progress, more precise control strategies for tuning surface area, pore size distribution, orientation/interconnectivity of pores, density of architectures, and mechanical stability, remain as key scientific and technological barriers that must be addressed to enable practical applications. Further, an important frontier area for future research will involve multilateral hybridization, involving diverse combinations of materials, morphologies, and assembly methods This will provide researchers a multi-dimensional toolbox to access hitherto unavailable properties of 2D material-based 3D architectures for a whole host of applications.

    更新日期:2017-07-05
  • Carbon nanotubes: Culprit or witness of air pollution?
    Nano Today (IF 17.476) Pub Date : 2017-05-15
    Jelena Kolosnjaj-Tabi, Henri Szwarc, Fathi Moussa

    The notorious PM2.5 (2.5 μm diameter particulate matters) that can reach human lungs, considered as responsible for most deleterious effects of air pollution, are now unmasked. Anthropogenic carbon nanotubes and other carbon nanoparticles have been unambiguously identified as the major components of PM2.5 in alveolar macrophages of Parisian children. Soot and diesel particulate matter have recognized detrimental health effects. However, information on the health effects of anthropogenic carbon nanotubes, which are the main components of PM2.5 found within human alveolar cells, is still lacking. While nanotechnologists are focused on applications with a profit, notably in the field of nano-biomedicine, the health effects of nano-particulate pollutants attract little of their attention. In an attempt to bridge the research gaps between cutting-edge nanotechnologies, environmental studies and biomedical approaches, this opinion paper attempts to inform the nanotechnology community about critical issues related to airborne anthropogenic carbon nanotubes. The question that has to be urgently addressed is whether carbon nanotubes are the main culprit or act only as nano-vectors of carcinogenic polycyclic aromatic hydrocarbons and other toxic gaseous pollutants.

    更新日期:2017-07-05
  • Complement activation turnover on surfaces of nanoparticles
    Nano Today (IF 17.476) Pub Date : 2017-04-12
    S.M. Moghimi, D. Simberg

    The complement system is an important component of the innate immune system, which contributes to non-specific host defence. Particulate matters, such as invading pathogens and nanomedicines, in the blood may activate the complement system through classical, lectin and alternative pathways. Complement activation can aid recognition and clearance of particulate matters by immune cells, but uncontrolled complement activation can inflict damage and be life threatening. Plasma proteins on adsorption to surfaces of nanoparticles also play a significant role in complement activation and particularly through the alternative pathway. This process is continuous and changeable in vivo; protein-complement complexes are formed on the nanoparticle surface and then released and the cycle repeats on further plasma protein deposition. This complement activation turnover poses a challenge for design of immune-safe nanomedicines.

    更新日期:2017-07-05
  • Editorial Board & Aims and Scope
    Nano Today (IF 17.476) Pub Date : 2017-04-19

    更新日期:2017-07-05
  • CNT transistors push towards the ultimate limit
    Nano Today (IF 17.476) Pub Date : 2017-02-16

    更新日期:2017-07-05
  • Water-based biocompatible inks make printing devices easy
    Nano Today (IF 17.476) Pub Date : 2017-02-16

    更新日期:2017-07-05
  • Nanostructured scaffolds get to the root of tooth repair
    Nano Today (IF 17.476) Pub Date : 2017-02-16

    更新日期:2017-07-05
  • Nano-grained perovskite LEDs shine more brightly
    Nano Today (IF 17.476) Pub Date : 2017-02-24

    更新日期:2017-07-05
  • Ultra-strong metals created in a smash
    Nano Today (IF 17.476) Pub Date : 2017-03-08

    更新日期:2017-07-05
  • Nanobiotechnology: Cell membrane-based delivery systems
    Nano Today (IF 17.476) Pub Date : 2016-11-12
    Pengfei Zhang, Gang Liu, Xiaoyuan Chen

    The increasingly rapid pace of research in the field of bioinspired drug delivery systems is revealing the promise of cell membrane-based nanovesicles for biomedical applications. Those cell membrane-based nanoparticles combine the natural functionalities of cell plasma membranes and the bioengineering flexibility of synthetic nanomaterials, and such versatility provides a means of designing exciting new drug formulations for personalized treatment in future nanomedicine.

    更新日期:2017-07-05
  • Photoluminescence mechanism in graphene quantum dots: Quantum confinement effect and surface/edge state
    Nano Today (IF 17.476) Pub Date : 2016-12-28
    Shoujun Zhu, Yubin Song, Joy Wang, Hao Wan, Yuan Zhang, Yang Ning, Bai Yang

    As a new class of fluorescent carbon materials, graphene quantum dots (GQDs) have drawn increasing attention due to their outstanding properties and potential applications. Herein, GQDs prepared by chemical synthetic strategies, which mainly contain cutting different carbon resources and carbonization from small molecules or polymers, are discussed. Although the photoluminescence (PL) mechanism of GQDs can be explained by the size of the GQDs, surface chemical groups, and doping atoms, there is no universal agreement on the specific PL mechanism. The dominant PL mechanism of GQDs consists of the quantum confinement effect of conjugated π-domains, the surface/edge state in GQDs, as well as the synergistic effect of these two factors.

    更新日期:2017-07-05
  • Peptide nanoparticle with pH-sensing cargo solubility enhances cancer drug efficiency
    Nano Today (IF 17.476) Pub Date : 2017-03-22
    Hoon Choi, Ting Liu, Kavindra Nath, Rong Zhou, I-Wei Chen

    We report a class of 17-amino-acid peptides that undergo a sharp hydrophobicity transition at pH around 7. Nanoparticles made of such peptides exhibit ultra pH-sensitivity and autonomous drug-eluting properties, which are beneficial for cancer drug delivery. At pH above 7, the peptides bind water-insoluble drug cargo and form a nanoparticle that protects its cargo from serum proteins. Sensing tumor's mildly acidic pH (≤7.0), nanoparticle peptides undergo a hydrophobic-to-hydrophilic transition and release drug molecules in the interstitial fluid as the nanoparticle migrates down the pH gradient in the tumor. When this pH-sensing and drug-eluting nanoparticle formulation was used to deliver two drugs, lonidamine inhibiting tumor bioenergetics and bis-2-(5-phenylacetamido-1,2,4-thiadiazol-2-yl)ethyl sulfide (BPTES) targeting cancer glutamine metabolism, to triple negative human breast cancer xenografts, the nanoparticle drug demonstrated superior efficiency compared to the respective standard formulation.

    更新日期:2017-07-05
  • Oxygen defective metal oxides for energy conversion and storage
    Nano Today (IF 17.476) Pub Date : 2017-03-17
    Gongming Wang, Yi Yang, Dongdong Han, Yat Li

    Controlled creation of intrinsic defects such as oxygen vacancies can effectively modulate the optical and electronic properties of metal oxide nanomaterials. In the past few years, a number of oxygen defective metal oxides have been developed and implemented as electrode materials for energy conversion and storage applications. They show significantly enhanced performance for photoelectrochemical water splitting, electrochemical charge storage, and (photo)electrochemical catalysis. In this review, we present an overview of progress made in preparing oxygen defective metal oxide nanostructures and probing the role of oxygen vacancies on the performance of metal oxides, and identify the key challenges and future opportunities for oxygen defective metal oxides.

    更新日期:2017-07-05
  • Gold nanoparticles for regulation of cell function and behavior
    Nano Today (IF 17.476) Pub Date : 2017-01-03
    Gustavo Bodelón, Celina Costas, Jorge Pérez-Juste, Isabel Pastoriza-Santos, Luis M. Liz-Marzán

    The cell possesses the remarkable ability to perceive and process chemical and physical stimuli, which in turn modulate cellular behavior. One of the great wonders about nanotechnology is that it enables the fabrication of tools on the same length scale as biomolecules, thereby providing us with a unique handle for characterizing and controlling basic cellular processes. Owing to their tunable size and shape dependent physical properties, biocompatibility and facile surface modification, gold nanoparticles become potentially powerful tools to probe fundamental aspects of cell biology. Consequently, innovative approaches based on gold nanoparticles are under development toward the manipulation of cell function and improvement of techniques currently used in biomedicine and biotechnology. In this review we provide an overview of recent applications based on gold nanoparticles and nanostructured materials for the modulation of cellular activity and behavior, mediated by their interactions with cell surface receptors.

    更新日期:2017-07-05
  • Recent advances of magneto-thermal capabilities of nanoparticles: From design principles to biomedical applications
    Nano Today (IF 17.476) Pub Date : 2017-03-16
    Seung-hyun Noh, Seung Ho Moon, Tae-Hyun Shin, Yongjun Lim, Jinwoo Cheon

    Magnetic nanoparticle (MNP)-mediated heating systems have emerged as an effective strategy for the fine control of biological systems from hyperthermia to cell signaling in a spatiotemporally controlled fashion. To achieve satisfactory performance, advanced design concepts have been developed to tailor the magnetism that directly affects the heating properties of nanoparticles. In this review, we focus on recent advances in magnetism-engineered nanoparticles. Fundamental principles of magnetic heating mechanisms and related key magnetic parameters are discussed first to provide instructive guidelines for the design of MNPs with enhanced heating efficiency. Then, we highlight recent progress in MNPs for optimized heat generation with unique design approaches to control magnetism. Finally, we discuss highly effective biomedical application studies such as dual-mode magnetic hyperthermia, magnetothermally triggered drug delivery, and the magnetothermal control of cellular activities.

    更新日期:2017-07-05
  • Frontiers of on-surface synthesis: From principles to applications
    Nano Today (IF 17.476) Pub Date : 2017-03-18
    Qian Shen, Hong-Ying Gao, Harald Fuchs

    On-surface synthesis is the bottom-up construction of covalent bonds between molecular building blocks, which has been greatly developed during the past decade. Dozens of reactions have been successfully realized and scrutinized on various surfaces with the help of surface science techniques combined with theoretical calculations. Functional nanoarchitectures such as one-dimensional nanowires, nanoribbons and two-dimensional nanonetworks have been constructed on surfaces and explored in several potential applications. In fact, the generation of multilevel nanostructures will play a key role in future soft nanoscience and technologies due to their emergent properties ranging far beyond those of the individual molecules building them up. In this review, we discuss selected examples of important processes in on-surface synthesis developed in recent years and summarize them under the following aspects: (1) on-surface reactions in a category of different carbon types; (2) techniques applied in on-surface synthesis; (3) on-surface synthesized functional nanostructures; and (4) potential applications of on-surface synthesized nano-materials. The review concludes with a perspective of the future development of on-surface synthesis.

    更新日期:2017-07-05
  • Editorial Board & Aims and Scope
    Nano Today (IF 17.476) Pub Date : 2017-02-10

    更新日期:2017-07-05
  • Harnessing H-bonds stretches electronics
    Nano Today (IF 17.476) Pub Date : 2017-01-03

    更新日期:2017-07-05
  • CNT terahertz scanner goes round the bend
    Nano Today (IF 17.476) Pub Date : 2017-01-03

    更新日期:2017-07-05
  • Graphene makes probing the brain easier
    Nano Today (IF 17.476) Pub Date : 2016-12-29

    更新日期:2017-07-05
  • Simple solution to nanomaterial production
    Nano Today (IF 17.476) Pub Date : 2016-12-29

    更新日期:2017-07-05
  • Ordering fibers in green nanocomposites is a stretch
    Nano Today (IF 17.476) Pub Date : 2017-01-02

    更新日期:2017-07-05
  • New properties with old materials: Layered black phosphorous
    Nano Today (IF 17.476) Pub Date : 2016-10-05
    Tianchao Niu

    Layered black phosphorous (BP), its tunable direct bandgap, higher carrier mobility and unique in-plane anisotropy, enables it to a promising candidate in design and optimization of electronics and optoelectronic devices with excellent performance. Although recent studies and perspectives aim at bringing this material to a level of maturity, the lack of wafer scale production and the surface reactivity of BP hindered a fully industrial processes. Here, we addressed the probable solutions to overcome these challenges black phosphorous was facing.

    更新日期:2017-07-05
  • The 3Rs as a framework to support a 21st century approach for nanosafety assessment
    Nano Today (IF 17.476) Pub Date : 2016-07-25
    Natalie Burden, Karin Aschberger, Qasim Chaudhry, Martin J.D. Clift, Shareen H. Doak, Paul Fowler, Helinor Johnston, Robert Landsiedel, Joanna Rowland, Vicki Stone

    Due to the plethora of nanomaterials being manufactured, it is crucial that their effects on human health are understood. It is not feasible to assess the safety of all nanomaterials using animal-based toxicity tests. There are also scientific, business, legislative and ethical drivers to reconsider the use of such toxicity tests. Utilising non-traditional methods has the potential to improve the human relevance of nanosafety assessment, reduce the numbers of animals that are used, and shift the paradigm to a ‘21st century’ approach that exploits recent scientific and technological advances. This article considers how application of the 3Rs principles can be used as a framework to support and guide this paradigm shift in the short, medium and long-term. Bringing the community together to facilitate the transition is necessary to ensure that tangible impacts are made on the efficiency and robustness of the nanosafety assessment process.

    更新日期:2017-07-05
  • Integrated graphene systems by laser irradiation for advanced devices
    Nano Today (IF 17.476) Pub Date : 2016-12-29
    Yang Zhao, Qing Han, Zhihua Cheng, Lan Jiang, Liangti Qu

    With the development of portable electronics, integrated graphene microstructures and devices have attracted increasing attention due to their environment-benign, lightweight feature with small occupied area. Laser irradiation technique with advantages of rapid processing speed, large scan area and nanometer spatial resolution has been widely studied and applied in the fabrication of various nano/microstructures of graphene materials for integrated electronic applications. This review summarizes the significant advance on laser-directed design and fabrication of integrated graphene devices, along with state-of-the-art applications in microcircuits, supercapacitors, sensors, actuators, memory chips and optoelectronic devices. The perspectives and challenges in designing and improving future graphene integrated devices are also discussed.

    更新日期:2017-07-05
  • Towards high efficiency nanowire solar cells
    Nano Today (IF 17.476) Pub Date : 2016-11-30
    Gaute Otnes, Magnus T. Borgström

    Semiconductor nanowires are a class of materials recently gaining increasing interest for solar cell applications. In this article we review the development of the field with a special focus on the III–V materials due to their potential to reach high power conversion efficiencies. After introducing basic concepts of nanowire synthesis, we discuss important aspects of nanowire design for high power conversion efficiencies; first in terms of light absorption, then in terms of charge carrier separation and collection. Further, we examine methods to assess and understand the materials quality and the solar cell performance. We end the review by a discussion of strategies and challenges in achieving efficiencies above the Shockley-Queisser limit, and the potential for cost efficient production.

    更新日期:2017-07-05
  • Large scale syntheses of colloidal nanomaterials
    Nano Today (IF 17.476) Pub Date : 2016-12-10
    Pearl L. Saldanha, Vladimir Lesnyak, Liberato Manna

    Nanoscale materials have long promised to revolutionize science and technology, with claims being sustained by both the advances in their fabrication and by the many fundamental studies that have been carried out to date, which have revealed fascinating properties when materials dimensions shrink all the way down to a few hundreds/thousands of atoms. In this ongoing hype, on one side we have the futuristic views and promises of ubiquitous devices in which the operating units will be eventually scaled down to individual atoms or molecules. On the other side, we have the more realistic (and already unfolding) scenario represented by nanoscale materials making their way in a wide variety of applications (not always and not necessarily flagged as “high-tech”) where downsizing truly brings about new or improved features that can be immediately exploited for some practical use. These applications have encompassed fields as disparate as medicine, biology, energy conversion and storage, catalysis, sensing, nanocomposite engineering, cosmetics, to cite the most popular ones. For a new technology to be pervasive and disruptive, the costs associated to the fabrication, the characterization and the assemblage of its key components have to drop quickly over time, while at the same time the material quality and the reproducibility of the various processes must keep improving. In the case of nanomaterials, we have not yet witnessed such an ubiquitous revolution, and one of the reasons is probably the lack of straightforward and reproducible synthetic protocols providing large amounts of nanomaterials and thus capable of efficient up-scaling to fulfil industrial needs. Another reason likely resides in the growing concern that nanomaterials will pose new threats to the environment, but this aspect will not be investigated here.

    更新日期:2017-07-05
  • Application of Au based nanomaterials in analytical science
    Nano Today (IF 17.476) Pub Date : 2016-12-28
    Peilong Wang, Zhenyu Lin, Xiaoou Su, Zhiyong Tang

    Au based nanomaterials (AuNMs) are known to poessess many attractive features such as unique electrical, optical and catalytic properties as well as excellent biocompatibility. These outstanding characteristics make them promising candidates as the signal reporters, enhancement materials or others involved with bioassay, food safety and environmental monitoring. In this review, we summarize the current advancement on application of AuNMs in analytical sciences based on their local surface plasmon resonance, fluorescence and electrochemistry properties. Finally future development in this research area is also prospected.

    更新日期:2017-07-05
  • Nanomaterials-based sensitive electrochemiluminescence biosensing
    Nano Today (IF 17.476) Pub Date : 2017-01-04
    Ying Chen, Shiwei Zhou, Lingling Li, Jun-jie Zhu

    Nanomaterials with wonderful optical, electrical and chemical properties are widely studied in recent decades. In electrochemiluminescence (ECL) sensing area, nanomaterials have also gained crescent attention for their excellent performance based on different functions, such as innovative luminophores, molecule carriers, electrode modification materials and reaction catalysts. Deep insight into ECL biosensing strategies with multifunctional nanomaterials will benefit the design of advanced sensors. Based on this, nanomaterials-based ECL biosensors have shown more promising potentials than traditional ones in analytical applications. After a brief overview of basic ECL principles and sensing approaches, herein, a general description of nanomaterials-based ECL biosensing is presented, especially with emphasis on recently developed ECL resonance energy transfer (ECL-RET) strategy. Finally, future outlooks are considered in building sensitive ECL biosensors.

    更新日期:2017-07-05
  • Covalent three-dimensional networks of graphene and carbon nanotubes: synthesis and environmental applications
    Nano Today (IF 17.476) Pub Date : 2016-12-28
    Archi Dasgupta, Lakshmy Pulickal Rajukumar, Christopher Rotella, Yu Lei, Mauricio Terrones

    In recent years tremendous efforts have been made to exploit the exceptional properties of 1-Dimensional carbon nanotubes and 2-Dimensional graphene in order to interconnect those forming 3-Dimensional hybrid systems. Such macroscopic 3-D networks possess several advantages such as highly accessible surface area, minimized agglomeration or re-stacking, enhanced thermal and electrical transport, and robust mechanical properties as compared to their nanoscale 1-D or 2-D building blocks. This review aims to provide a fundamental understanding of state-of-the-art synthesis methodologies for interconnecting these carbon nanostructures, structure-property relationships as well as potential environmental applications related to adsorption, catalysis, sensing, and energy conversion. The technical challenges and future research opportunities are also discussed.

    更新日期:2017-07-05
  • Metal-phenolic networks as a versatile platform to engineer nanomaterials and biointerfaces
    Nano Today (IF 17.476) Pub Date : 2016-12-29
    Hirotaka Ejima, Joseph J. Richardson, Frank Caruso

    Surface modification is crucial for conferring novel functionalities to objects and interfaces. However, simple yet versatile strategies for the surface modification of multiple classes of nanomaterials, including biointerfaces, are rare, as the chemical interactions between the surface modifiers and the substrates need to be tailored on a case-by-case basis. Recently, metal-phenolic networks (MPNs) have emerged as a versatile surface modifier based on the universal adherent properties of phenolic molecules, namely the constituent gallol and catechol groups. Additionally, the dynamic interactions between metal ions and phenolic molecules confer additional functionalities to the MPNs, such as stimuli-responsiveness. Given the interest in MPNs for nanomaterial and biointerface engineering, this review aims to provide an overview of the assembly process, physicochemical properties and applications of MPN coatings.

    更新日期:2017-07-05
  • Editorial Board & Aims and Scope
    Nano Today (IF 17.476) Pub Date : 

    更新日期:2017-07-05
  • Water charges through some nanotubes...but not others
    Nano Today (IF 17.476) Pub Date : 

    更新日期:2017-07-05
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  • New alloy isn’t creepy at high temperatures
    Nano Today (IF 17.476) Pub Date : 

    更新日期:2017-07-05
Some contents have been Reproduced with permission of the American Chemical Society.
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
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