-
Technology for the formation of engineered microvascular network models and their biomedical applications Nano Convergence (IF 11.7) Pub Date : 2024-03-02 He Li, Yucheng Shang, Jinfeng Zeng, Michiya Matsusaki
Tissue engineering and regenerative medicine have made great progress in recent decades, as the fields of bioengineering, materials science, and stem cell biology have converged, allowing tissue engineers to replicate the structure and function of various levels of the vascular tree. Nonetheless, the lack of a fully functional vascular system to efficiently supply oxygen and nutrients has hindered
-
Electrochemical random-access memory: recent advances in materials, devices, and systems towards neuromorphic computing Nano Convergence (IF 11.7) Pub Date : 2024-02-28 Hyunjeong Kwak, Nayeon Kim, Seonuk Jeon, Seyoung Kim, Jiyong Woo
Artificial neural networks (ANNs), inspired by the human brain's network of neurons and synapses, enable computing machines and systems to execute cognitive tasks, thus embodying artificial intelligence (AI). Since the performance of ANNs generally improves with the expansion of the network size, and also most of the computation time is spent for matrix operations, AI computation have been performed
-
Materials descriptors of machine learning to boost development of lithium-ion batteries Nano Convergence (IF 11.7) Pub Date : 2024-02-26 Zehua Wang, Li Wang, Hao Zhang, Hong Xu, Xiangming He
Traditional methods for developing new materials are no longer sufficient to meet the needs of the human energy transition. Machine learning (ML) artificial intelligence (AI) and advancements have caused materials scientists to realize that using AI/ML to accelerate the development of new materials for batteries is a powerful potential tool. Although the use of certain fixed properties of materials
-
Effect of gut microbiota-derived metabolites and extracellular vesicles on neurodegenerative disease in a gut-brain axis chip Nano Convergence (IF 11.7) Pub Date : 2024-02-10 Na Yeon Kim, Ho Yeon Lee, Yoon Young Choi, Sung Jun Mo, Soomin Jeon, Jang Ho Ha, Soo Dong Park, Jae-Jung Shim, Jaehwan Lee, Bong Geun Chung
A new perspective suggests that a dynamic bidirectional communication system, often referred to as the microbiome-gut-brain axis, exists among the gut, its microbiome, and the central nervous system (CNS). This system may influence brain health and various brain-related diseases, especially in the realms of neurodevelopmental and neurodegenerative conditions. However, the exact mechanism is not yet
-
Polymeric DNase-I nanozymes targeting neutrophil extracellular traps for the treatment of bowel inflammation Nano Convergence (IF 11.7) Pub Date : 2024-02-08 Chi-Pin James Wang, Ga Ryang Ko, Yun Young Lee, Juwon Park, Wooram Park, Tae-Eun Park, Yoonhee Jin, Se-Na Kim, Jung Seung Lee, Chun Gwon Park
Inflammatory bowel disease (IBD), including Crohn’s disease and ulcerative colitis, is a family of chronic disorders along the gastrointestinal tract. Because of its idiopathic nature, IBD does not have a fundamental cure; current available therapies for IBD are limited to prolonged doses of immunomodulatory agents. While these treatments may reduce inflammation, limited therapeutic efficacy, inconsistency
-
Formation techniques for upper active channel in monolithic 3D integration: an overview Nano Convergence (IF 11.7) Pub Date : 2024-01-29 An Hoang-Thuy Nguyen, Manh-Cuong Nguyen, Anh-Duy Nguyen, Seung Joon Jeon, Noh-Hwal Park, Jeong-Hwan Lee, Rino Choi
The concept of three-dimensional stacking of device layers has attracted significant attention with the increasing difficulty in scaling down devices. Monolithic 3D (M3D) integration provides a notable benefit in achieving a higher connection density between upper and lower device layers than through-via-silicon. Nevertheless, the practical implementation of M3D integration into commercial production
-
How to improve the structural stabilities of halide perovskite quantum dots: review of various strategies to enhance the structural stabilities of halide perovskite quantum dots Nano Convergence (IF 11.7) Pub Date : 2024-01-27 Dokyum Kim, Taesun Yun, Sangmin An, Chang-Lyoul Lee
Halide perovskites have emerged as promising materials for various optoelectronic devices because of their excellent optical and electrical properties. In particular, halide perovskite quantum dots (PQDs) have garnered considerable attention as emissive materials for light-emitting diodes (LEDs) because of their higher color purities and photoluminescence quantum yields compared to conventional inorganic
-
Advances in nanobiosensors during the COVID-19 pandemic and future perspectives for the post-COVID era Nano Convergence (IF 11.7) Pub Date : 2024-01-11 Young Jun Kim, Junhong Min
The unprecedented threat of the highly contagious virus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes exponentially increased infections of coronavirus disease 2019 (COVID-19), highlights the weak spots of the current diagnostic toolbox. In the midst of catastrophe, nanobiosensors offer a new opportunity as an alternative tool to fill a gap among molecular tests, rapid
-
Rapid assays of SARS-CoV-2 virus and noble biosensors by nanomaterials Nano Convergence (IF 11.7) Pub Date : 2024-01-08 Yang Liu, Yilong Li, Yuteng Hang, Lei Wang, Jinghan Wang, Ning Bao, Youngeun Kim, Ho Won Jang
The COVID-19 outbreak caused by SARS-CoV-2 in late 2019 has spread rapidly across the world to form a global epidemic of respiratory infectious diseases. Increased investigations on diagnostic tools are currently implemented to assist rapid identification of the virus because mass and rapid diagnosis might be the best way to prevent the outbreak of the virus. This critical review discusses the detection
-
Upconverting-photon quenching-mediated perforation influx as an intracellular delivery method using posAuNP@UCNPs nanocomposites for osteoarthritis treatment Nano Convergence (IF 11.7) Pub Date : 2024-01-03 Hye Jin Kim, Hui Bang Cho, Hye-Ryoung Kim, Sujeong Lee, Ji-in Park, Keun-Hong Park
Photoporation techniques based on plasmonic nanoparticles such as gold nanoparticles have been extensively studied for the intracellular delivery of substances via cell membrane disruption. However, the clinical application of AuNP is challenging due to its absorption in the 500 nm region of the light spectrum. To overcome this challenge, upconversion nanoparticles were employed to stimulate AuNP at
-
Nanoscale inhomogeneity and the evolution of correlation strength in FeSe\(_{1-x}\)S\(_x\) Nano Convergence (IF 11.7) Pub Date : 2023-12-22 Yu Liu, Aifeng Wang, Qianheng Du, Lijun Wu, Yimei Zhu, Cedomir Petrovic
We report a comprehensive study of the nanoscale inhomogeneity and disorder on the thermoelectric properties of FeSe $$_{1-x}$$ S $$_x$$ ( $$0 \le x \le 1$$ ) single crystals and the evolution of correlation strength with S substitution. A hump-like feature in temperature-dependent thermpower is enhanced for x = 0.12 and 0.14 in the nematic region with increasing in orbital-selective electronic correlations
-
Filament-free memristors for computing Nano Convergence (IF 11.7) Pub Date : 2023-12-19 Sanghyeon Choi, Taehwan Moon, Gunuk Wang, J. Joshua Yang
Memristors have attracted increasing attention due to their tremendous potential to accelerate data-centric computing systems. The dynamic reconfiguration of memristive devices in response to external electrical stimuli can provide highly desirable novel functionalities for computing applications when compared with conventional complementary-metal–oxide–semiconductor (CMOS)-based devices. Those most
-
Recent progress of exciton transport in two-dimensional semiconductors Nano Convergence (IF 11.7) Pub Date : 2023-12-15 Hyeongwoo Lee, Yong Bin Kim, Jae Won Ryu, Sujeong Kim, Jinhyuk Bae, Yeonjeong Koo, Donghoon Jang, Kyoung-Duck Park
Spatial manipulation of excitonic quasiparticles, such as neutral excitons, charged excitons, and interlayer excitons, in two-dimensional semiconductors offers unique capabilities for a broad range of optoelectronic applications, encompassing photovoltaics, exciton-integrated circuits, and quantum light-emitting systems. Nonetheless, their practical implementation is significantly restricted by the
-
Tailoring tumor-recognizable hyaluronic acid–lipid conjugates to enhance anticancer efficacies of surface-engineered natural killer cells Nano Convergence (IF 11.7) Pub Date : 2023-12-14 Chae Eun Lee, Sungjun Kim, Hee Won Park, Wonjeong Lee, Ashok Kumar Jangid, Yonghyun Choi, Woo-Jin Jeong, Kyobum Kim
Natural killer (NK) cells have clinical advantages in adoptive cell therapy owing to their inherent anticancer efficacy and their ability to identify and eliminate malignant tumors. However, insufficient cancer-targeting ligands on NK cell surfaces often inhibit their immunotherapeutic performance, especially in immunosuppressive tumor microenvironment. To facilitate tumor recognition and subsequent
-
Role of oxygen vacancies in ferroelectric or resistive switching hafnium oxide Nano Convergence (IF 11.7) Pub Date : 2023-12-01 Jaewook Lee, Kun Yang, Ju Young Kwon, Ji Eun Kim, Dong In Han, Dong Hyun Lee, Jung Ho Yoon, Min Hyuk Park
HfO2 shows promise for emerging ferroelectric and resistive switching (RS) memory devices owing to its excellent electrical properties and compatibility with complementary metal oxide semiconductor technology based on mature fabrication processes such as atomic layer deposition. Oxygen vacancy (Vo), which is the most frequently observed intrinsic defect in HfO2-based films, determines the physical/electrical
-
Phase patterning of metallic glasses through superfast quenching of ion irradiation-induced thermal spikes Nano Convergence (IF 11.7) Pub Date : 2023-11-21 Hyosim Kim, Tianyao Wang, Jonathan Gigax, Arezoo Zare, Don A. Lucca, Zhihan Hu, Yongchang Li, Trevor Parker, Lin Shao
Amorphous metallic glasses (MGs) convert to crystalline solids upon annealing at a high temperature. Such a phase change, however, does not occur with the local melting caused by damage cascades introduced by ion irradiation, although the resulting thermal spikes can reach temperatures > 1000 K. This is because the quenching rate of the local melting zone is several orders of magnitude higher than
-
3D-printed wound dressing platform for protein administration based on alginate and zinc oxide tetrapods Nano Convergence (IF 11.7) Pub Date : 2023-11-16 Philipp Schadte, Franziska Rademacher, Gerrit Andresen, Marie Hellfritzsch, Haoyi Qiu, Gregor Maschkowitz, Regine Gläser, Nina Heinemann, Daniel Drücke, Helmut Fickenscher, Regina Scherließ, Jürgen Harder, Rainer Adelung, Leonard Siebert
Wound treatment requires a plethora of independent properties. Hydration, anti-bacterial properties, oxygenation and patient-specific drug delivery all contribute to the best possible wound healing. Three-dimensional (3D) printing has emerged as a set of techniques to realize individually adapted wound dressings with open porous structure from biomedically optimized materials. To include all the desired
-
Nanomaterials-incorporated hydrogels for 3D bioprinting technology Nano Convergence (IF 11.7) Pub Date : 2023-11-15 Jungbin Yoon, Hohyeon Han, Jinah Jang
In the field of tissue engineering and regenerative medicine, various hydrogels derived from the extracellular matrix have been utilized for creating engineered tissues and implantable scaffolds. While these hydrogels hold immense promise in the healthcare landscape, conventional bioinks based on ECM hydrogels face several challenges, particularly in terms of lacking the necessary mechanical properties
-
Recombinant protein embedded liposome on gold nanoparticle based on LSPR method to detect Corona virus Nano Convergence (IF 11.7) Pub Date : 2023-10-30 Lina Kim, Seongjae Jo, Gyeong-Ji Kim, Kyung Ho Kim, Sung Eun Seo, Eunsu Ryu, Chan Jae Shin, Yu Kyung Kim, Jeong-Woo Choi, Oh Seok Kwon
Antibody sensor to detect viruses has been widely used but has problems such as the difficulty of right direction control of the receptor site on solid substrate, and long time and high cost for design and production of antibodies to new emerging viruses. The virus detection sensor with a recombinant protein embedded liposome (R/Li) was newly developed to solve the above problems, in which R/Li was
-
La-doped BaSnO3 for electromagnetic shielding transparent conductors Nano Convergence (IF 11.7) Pub Date : 2023-10-28 Jingyeong Jeon, Youngkyoung Ha, Judith L. MacManus-Driscoll, Shinbuhm Lee
In this work, we find that La-doped BaSnO3 (BLSO) is shown to be a promising electromagnetic shielding transparent conductor. While films grown on industrially practical optoelectronic MgAl2O4 substrates have higher sheet resistance by three orders of magnitude than in previous reports, we show how to recover the sheet resistance close to the single-crystal level by use of an MgO template layer which
-
Correction: Understanding the 2D-material and substrate interaction during epitaxial growth towards successful remote epitaxy: a review Nano Convergence (IF 11.7) Pub Date : 2023-10-21 Jongho Ji, Hoe-Min Kwak, Jimyeong Yu, Sangwoo Park, Jeong-Hwan Park, Hyunsoo Kim, Seokgi Kim, Sungkyu Kim, Dong-Seon Lee, Hyun S. Kum
Correction to: Nano Convergence (2023) 10:19 https://doi.org/10.1186/s40580-023-00368-4 Following publication of the original article [1], the authors noticed some errors. In Sect. 4.3, “In-situ 2D growth”, and in caption of Fig. 3, the compound name "h-BN" should be changed to "BN (Boron nitride)" and "graphene" to be changed to "thin amorphous carbon (TAC)". In consistent with the corrections in
-
Nano-biomaterials and advanced fabrication techniques for engineering skeletal muscle tissue constructs in regenerative medicine Nano Convergence (IF 11.7) Pub Date : 2023-10-21 Seokgyu Han, Sebastián Herrera Cruz, Sungsu Park, Su Ryon Shin
Engineered three-dimensional (3D) tissue constructs have emerged as a promising solution for regenerating damaged muscle tissue resulting from traumatic or surgical events. 3D architecture and function of the muscle tissue constructs can be customized by selecting types of biomaterials and cells that can be engineered with desired shapes and sizes through various nano- and micro-fabrication techniques
-
Potential and perspectives of halide perovskites in light emitting devices Nano Convergence (IF 11.7) Pub Date : 2023-10-13 Khan Lê, Niusha Heshmati, Sanjay Mathur
Light emitting diodes (LEDs) have become part of numerous electrical and electronic systems such as lighting, displays, status indicator lamps and wearable electronics. Owing to their excellent optoelectronic properties and deposition via simple solution process, metal halide perovskites possess unique potential for developing halide perovskite-based LEDs (PeLEDs) with superior photoluminescence efficiencies
-
Correction: Two-dimensional materials for high density, safe and robust metal anodes batteries Nano Convergence (IF 11.7) Pub Date : 2023-09-22 Hoilun Wong, Yuyin Li, Jun Wang, Tsz Wing Tang, Yuting Cai, Mengyang Xu, Hongliang Li, Tae-Hyung Kim, Zhengtang Luo
Correction: Nano Convergence (2023) 10:37 https://doi.org/10.1186/s40580-023-00384-4 Following publication of the original article [1], the authors noticed that a footnote denoting equal contribution was omitted and the affiliations for the corresponding author are given incorrectly. The following footnote should have been included for authors “Hoilun Wong and Yuyin Li contributed equally to this work
-
3D printed fluidic swab for COVID-19 testing with improved diagnostic yield and user comfort Nano Convergence (IF 11.7) Pub Date : 2023-09-16 Joochan Kim, Jaehyung Jeon, Hyowon Jang, Youngkwang Moon, Abdurhaman Teyib Abafogi, Danny van Noort, Jinkee Lee, Taejoon Kang, Sungsu Park
The current standard method of diagnosing coronavirus disease 2019 (COVID-19) involves uncomfortable and invasive nasopharyngeal (NP) sampling using cotton swabs (CS), which can be unsuitable for self-testing. Although mid-turbinate sampling is an alternative, it has a lower diagnostic yield than NP sampling. Nasal wash (NW) has a similar diagnostic yield to NP sampling, but is cumbersome to perform
-
Multi-level resistive switching in hafnium-oxide-based devices for neuromorphic computing Nano Convergence (IF 11.7) Pub Date : 2023-09-14 Markus Hellenbrand, Judith MacManus-Driscoll
In the growing area of neuromorphic and in-memory computing, there are multiple reviews available. Most of them cover a broad range of topics, which naturally comes at the cost of details in specific areas. Here, we address the specific area of multi-level resistive switching in hafnium-oxide-based devices for neuromorphic applications and summarize the progress of the most recent years. While the
-
Correction: Optical anisotropy of CsPbBr3 perovskite nanoplatelets Nano Convergence (IF 11.7) Pub Date : 2023-09-11 Benjamin T. Diroll, Progna Banerjee, Elena V. Shevchenko
Correction: Nano Convergence (2023) 10:18 https://doi.org/10.1186/s40580-023-00367-5 In the original publication of the article [1], the copyright holder was incorrectly given as ‘© Argonne National Laboratory, under exclusive licence to Korea Nanotechnology Research Society (KoNTRS) and Springer Nature Singapore Pte Ltd. 2023' but should have been ‘© Argonne National Laboratory'. This has now been
-
Biomimetic and bioorthogonal nanozymes for biomedical applications Nano Convergence (IF 11.7) Pub Date : 2023-09-11 Changjoon Keum, Cristina-Maria Hirschbiegel, Soham Chakraborty, Soyeong Jin, Youngdo Jeong, Vincent M. Rotello
Nanozymes mimic the function of enzymes, which drive essential intracellular chemical reactions that govern biological processes. They efficiently generate or degrade specific biomolecules that can initiate or inhibit biological processes, regulating cellular behaviors. Two approaches for utilizing nanozymes in intracellular chemistry have been reported. Biomimetic catalysis replicates the identical
-
Recent advances in 3D printable conductive hydrogel inks for neural engineering Nano Convergence (IF 11.7) Pub Date : 2023-09-07 Sung Dong Kim, Kyoungryong Kim, Mikyung Shin
Recently, the 3D printing of conductive hydrogels has undergone remarkable advances in the fabrication of complex and functional structures. In the field of neural engineering, an increasing number of reports have been published on tissue engineering and bioelectronic approaches over the last few years. The convergence of 3D printing methods and electrically conducting hydrogels may create new clinical
-
Unveiling the mechanism of remote epitaxy of crystalline semiconductors on 2D materials-coated substrates Nano Convergence (IF 11.7) Pub Date : 2023-08-30 Xuejing Wang, Joonghoon Choi, Jinkyoung Yoo, Young Joon Hong
Remote epitaxy has opened novel opportunities for advanced manufacturing and heterogeneous integration of two-dimensional (2D) materials and conventional (3D) materials. The lattice transparency as the fundamental principle of remote epitaxy has been studied and challenged by recent observations defying the concept. Understanding remote epitaxy requires an integrated approach of theoretical modeling
-
Lattice modulation strategies for 2D material assisted epitaxial growth Nano Convergence (IF 11.7) Pub Date : 2023-08-25 Qi Chen, Kailai Yang, Meng Liang, Junjie Kang, Xiaoyan Yi, Junxi Wang, Jinmin Li, Zhiqiang Liu
As an emerging single crystals growth technique, the 2D-material-assisted epitaxy shows excellent advantages in flexible and transferable structure fabrication, dissimilar materials integration, and matter assembly, which offers opportunities for novel optoelectronics and electronics development and opens a pathway for the next-generation integrated system fabrication. Studying and understanding the
-
Recent progress of low-temperature plasma technology in biorefining process Nano Convergence (IF 11.7) Pub Date : 2023-08-24 Lusha Qin, Oi Lun Li
In recent years, low-temperature plasma-assisted processes, featuring high reaction efficiency and wide application scope, have emerged as a promising alternative to conventional methods for biomass valorization. It is well established that charged species, chemically energetic molecules and radicals, and highly active photons playing key roles during processing. This review presents the major applications
-
Two-dimensional materials for high density, safe and robust metal anodes batteries Nano Convergence (IF 11.7) Pub Date : 2023-08-10 Hoilun Wong, Yuyin Li, Jun Wang, Tsz Wing Tang, Yuting Cai, Mengyang Xu, Hongliang Li, Tae-Hyung Kim, Zhengtang Luo
With a high specific capacity and low electrochemical potentials, metal anode batteries that use lithium, sodium and zinc metal anodes, have gained great research interest in recent years, as a potential candidate for high-energy-density storage systems. However, the uncontainable dendrite growth during the repeated charging process, deteriorates the battery performance, reduces the battery life and
-
Lipid nanoparticle-based mRNA delivery systems for cancer immunotherapy Nano Convergence (IF 11.7) Pub Date : 2023-08-07 Jieun Han, Jaesung Lim, Chi-Pin James Wang, Jun-Hyeok Han, Ha Eun Shin, Se-Na Kim, Dooyong Jeong, Sang Hwi Lee, Bok-Hwan Chun, Chun Gwon Park, Wooram Park
Cancer immunotherapy, which harnesses the power of the immune system, has shown immense promise in the fight against malignancies. Messenger RNA (mRNA) stands as a versatile instrument in this context, with its capacity to encode tumor-associated antigens (TAAs), immune cell receptors, cytokines, and antibodies. Nevertheless, the inherent structural instability of mRNA requires the development of effective
-
Vertical nanoscale strain-induced electronic localization in epitaxial La2/3Sr1/3MnO3 films with ZrO2 nanopillar inclusions Nano Convergence (IF 11.7) Pub Date : 2023-07-28 Yuze Gao, Manuel A. Roldan, Liang Qiao, David Mandrus, Xuechu Shen, Matthew F. Chisholm, David J. Singh, Guixin Cao
Unusual electrical transport properties associated with weak or strong localization are sometimes found in disordered electronic materials. Here, we report experimental observation of a crossover of electronic behavior from weak localization to enhanced weak localization due to the spatial influence of disorder induced by ZrO2 nanopillars in (La2/3Sr1/3MnO3)1−x:(ZrO2)x (x = 0, 0.2, and 0.3) nanocomposite
-
Strong coupling in plasmonic metal nanoparticles Nano Convergence (IF 11.7) Pub Date : 2023-07-20 Yoon-Min Lee, Seong-Eun Kim, Jeong-Eun Park
The study of strong coupling between light and matter has gained significant attention in recent years due to its potential applications in diverse fields, including artificial light harvesting, ultraefficient polariton lasing, and quantum information processing. Plasmonic cavities are a compelling alternative of conventional photonic resonators, enabling ultracompact polaritonic systems to operate
-
Mimicking biological synapses with a-HfSiOx-based memristor: implications for artificial intelligence and memory applications Nano Convergence (IF 11.7) Pub Date : 2023-07-10 Muhammad Ismail, Maria Rasheed, Chandreswar Mahata, Myounggon Kang, Sungjun Kim
Memristors, owing to their uncomplicated structure and resemblance to biological synapses, are predicted to see increased usage in the domain of artificial intelligence. Additionally, to augment the capacity for multilayer data storage in high-density memory applications, meticulous regulation of quantized conduction with an extremely low transition energy is required. In this work, an a-HfSiOx-based
-
Enhanced thermoelectric performance of SnSe by controlled vacancy population Nano Convergence (IF 11.7) Pub Date : 2023-07-07 Ji-Eun Lee, Kyoo Kim, Van Quang Nguyen, Jinwoong Hwang, Jonathan D. Denlinger, Byung Il Min, Sunglae Cho, Hyejin Ryu, Choongyu Hwang, Sung-Kwan Mo
The thermoelectric performance of SnSe strongly depends on its low-energy electron band structure that provides high density of states in a narrow energy window due to the multi-valley valence band maximum (VBM). Angle-resolved photoemission spectroscopy measurements, in conjunction with first-principles calculations, reveal that the binding energy of the VBM of SnSe is tuned by the population of Sn
-
Optical engineering of PbS colloidal quantum dot solar cells via Fabry–Perot resonance and distributed Bragg reflectors Nano Convergence (IF 11.7) Pub Date : 2023-07-04 Sumin Bae, Matthew Duff, Jun Young Hong, Jung-Kun Lee
A tradeoff between light absorption and charge transport is a well-known issue in PbS colloidal quantum dot (CQD) solar cells because the carrier diffusion length in PbS CQD films is comparable to the thickness of CQD film. We reduce the tradeoff between light absorption and charge transport by combining a Fabry–Perot (FP) resonator and a distributed Bragg reflector (DBR). A FP resonance is formed
-
Highly sensitive ultrasound detection using nanofabricated polymer micro-ring resonators Nano Convergence (IF 11.7) Pub Date : 2023-06-20 Youngseop Lee, Hao F. Zhang, Cheng Sun
Photoacoustic (PA) imaging enables noninvasive volumetric imaging of biological tissues by capturing the endogenous optical absorption contrast. Conventional ultrasound detectors using piezoelectric materials have been widely used for transducing ultrasound signals into the electrical signals for PA imaging reconstruction. However, their inherent limitations in detection bandwidth and sensitivity per
-
Functional photoacoustic imaging: from nano- and micro- to macro-scale Nano Convergence (IF 11.7) Pub Date : 2023-06-19 Byullee Park, Donghyeon Oh, Jeesu Kim, Chulhong Kim
Functional photoacoustic imaging is a promising biological imaging technique that offers such unique benefits as scalable resolution and imaging depth, as well as the ability to provide functional information. At nanoscale, photoacoustic imaging has provided super-resolution images of the surface light absorption characteristics of materials and of single organelles in cells. At the microscopic and
-
Progress and outlook of Sn–Pb mixed perovskite solar cells Nano Convergence (IF 11.7) Pub Date : 2023-06-16 Hyemin Lee, Seok Beom Kang, Sangwook Lee, Kai Zhu, Dong Hoe Kim
Organic–inorganic hybrid perovskites have revolutionized solar cell research owing to their excellent material properties. Most previous research has been done on Pb-based perovskites. Recently, efforts to discover a Pb-free or Pb-less perovskite material with an ideal bandgap ranging 1.1–1.3 eV have led researchers to investigate Sn–Pb mixed perovskites. Sn–Pb mixed perovskites have a bandgap of ~ 1
-
Recent progress of eco-friendly manufacturing process of efficient perovskite solar cells Nano Convergence (IF 11.7) Pub Date : 2023-06-12 Nayoon Kwon, Jaehee Lee, Min Jae Ko, Young Yun Kim, Jangwon Seo
Perovskite solar cells (PSCs) have the potential to produce solar energy at a low cost, with flexibility, and high power conversion efficiency (PCE). However, there are still challenges to be addressed before mass production of PSCs, such as prevention from degradation under external stresses and the uniform, large-area formation of all layers. Among them, the most challenging aspect of mass production
-
Intracellular lipophilic network transformation induced by protease-specific endocytosis of fluorescent Au nanoclusters Nano Convergence (IF 11.7) Pub Date : 2023-06-09 Minhee Ku, Jaemoon Yang
The understanding of the endocytosis process of internalized nanomedicines through membrane biomarker is essential for the development of molecular-specific nanomedicines. In various recent reports, the metalloproteases have been identified as important markers during the metastasis of cancer cells. In particular, MT1-MMP has provoked concern due to its protease activity in the degradation of the extracellular
-
Polyaniline-based 3D network structure promotes entrapment and detection of drug-resistant bacteria Nano Convergence (IF 11.7) Pub Date : 2023-05-27 Younseong Song, Nahyun Park, Da Ae Jo, Jueun Kim, Dongeun Yong, Jayeon Song, Yoo Min Park, Seok Jae Lee, Yong Tae Kim, Sung Gap Im, Bong Gill Choi, Taejoon Kang, Kyoung G. Lee
Sensitive and accurate capture, enrichment, and identification of drug-resistant bacteria on human skin are important for early-stage diagnosis and treatment of patients. Herein, we constructed a three-dimensional hierarchically structured polyaniline nanoweb (3D HPN) to capture, enrich, and detect drug-resistant bacteria on-site by rubbing infected skins. These unique hierarchical nanostructures enhance
-
Recent advancements of metalenses for functional imaging Nano Convergence (IF 11.7) Pub Date : 2023-05-24 Dongmin Jeon, Kilsoo Shin, Seong-Won Moon, Junsuk Rho
Metasurfaces can modulate light with periodically arranged subwavelength scatterers, and they can generate arbitrary wavefronts. Therefore, they can be used to realize various optical components. In particular, metasurfaces can be used to realize lenses, so-called metalenses. In the last decade, metalenses have been actively studied and developed. In this review, we firstly introduce the fundamental
-
Perovskite single-crystal thin films: preparation, surface engineering, and application Nano Convergence (IF 11.7) Pub Date : 2023-05-22 Zemin Zhang, Wooyeon Kim, Min Jae Ko, Yuelong Li
Perovskite single-crystal thin films (SCTFs) have emerged as a significant research hotspot in the field of optoelectronic devices owing to their low defect state density, long carrier diffusion length, and high environmental stability. However, the large-area and high-throughput preparation of perovskite SCTFs is limited by significant challenges in terms of reducing surface defects and manufacturing
-
Interfacial modification in perovskite-based tandem solar cells Nano Convergence (IF 11.7) Pub Date : 2023-05-20 Ik Jae Park, Hyo Kyung An, Yuna Chang, Jin Young Kim
With photovoltaic performance of metal halide perovskite-based solar cells skyrocketing to approximately 26% and approaching the theoretical Shockley–Queisser limit of single junction solar cells, researchers are now exploring multi-junction tandem solar cells that use perovskite materials to achieve high efficiency next-generation photovoltaics. Various types of bottom subcells, including silicon
-
Water-stable, biocompatible, and highly luminescent perovskite nanocrystals-embedded fiber-based paper for anti-counterfeiting applications Nano Convergence (IF 11.7) Pub Date : 2023-05-03 Madhumita Patel, Rajkumar Patel, Chanho Park, Kanghee Cho, Pawan Kumar, Cheolmin Park, Won-Gun Koh
In this study, we present a promising and facile approach toward the fabrication of non-toxic, water-stable, and eco-friendly luminescent fiber paper composed of polycaprolactone (PCL) polymer and CsPbBr3@SiO2 core–shell perovskite nanocrystals. PCL-perovskite fiber paper was fabricated using a conventional electrospinning process. Transmission electron microscopy (TEM) clearly revealed incorporation
-
Applications of remote epitaxy and van der Waals epitaxy Nano Convergence (IF 11.7) Pub Date : 2023-04-30 Ilpyo Roh, Seok Hyeon Goh, Yuan Meng, Justin S. Kim, Sangmoon Han, Zhihao Xu, Han Eol Lee, Yeongin Kim, Sang-Hoon Bae
Epitaxy technology produces high-quality material building blocks that underpin various fields of applications. However, fundamental limitations exist for conventional epitaxy, such as the lattice matching constraints that have greatly narrowed down the choices of available epitaxial material combinations. Recent emerging epitaxy techniques such as remote and van der Waals epitaxy have shown exciting
-
Understanding the 2D-material and substrate interaction during epitaxial growth towards successful remote epitaxy: a review Nano Convergence (IF 11.7) Pub Date : 2023-04-28 Jongho Ji, Hoe-Min Kwak, Jimyeong Yu, Sangwoo Park, Jeong-Hwan Park, Hyunsoo Kim, Seokgi Kim, Sungkyu Kim, Dong-Seon Lee, Hyun S. Kum
Remote epitaxy, which was discovered and reported in 2017, has seen a surge of interest in recent years. Although the technology seemed to be difficult to reproduce by other labs at first, remote epitaxy has come a long way and many groups are able to consistently reproduce the results with a wide range of material systems including III-V, III-N, wide band-gap semiconductors, complex-oxides, and even
-
Optical anisotropy of CsPbBr3 perovskite nanoplatelets Nano Convergence (IF 11.7) Pub Date : 2023-04-25 Benjamin T. Diroll, Progna Banerjee, Elena V. Shevchenko
The two-dimensional CsPbBr3 nanoplatelets have a quantum well electronic structure with a band gap tunable with sample thicknesses in discreet steps based upon the number of monolayers. The polarized optical properties of CsPbBr3 nanoplatelets are studied using fluorescence anisotropy and polarized transient absorption spectroscopies. Polarized spectroscopy shows that they have absorption and emission
-
Colloidal inorganic nano- and microparticles for passive daytime radiative cooling Nano Convergence (IF 11.7) Pub Date : 2023-04-18 Ho Young Woo, Yoonjoo Choi, Hyesun Chung, Da Won Lee, Taejong Paik
Compared to traditional cooling systems, radiative cooling (RC) is a promising cooling strategy in terms of reducing energy consumption enormously and avoiding severe environmental issues. Radiative cooling materials (RCMs) reduce the temperature of objects without using an external energy supply by dissipating thermal energy via infrared (IR) radiation into the cold outer space through the atmospheric
-
Effect of vacancies and edges in promoting water chemisorption on titanium-based MXenes Nano Convergence (IF 11.7) Pub Date : 2023-04-01 Edoardo Marquis, Francesca Benini, Babak Anasori, Andreas Rosenkranz, Maria Clelia Righi
The functionality of two-dimensional (2D) transition metal carbides and nitrides (MXenes) in technological applications greatly depends on their wettability. For instance, MXenes’ layer stability against degradative oxidation is notably reduced when stored in aqueous solutions, leading to the transformation into oxides. In this work, we study water adsorption on Ti-based MXenes by ab initio calculations
-
Shape-altering flexible plasmonics of in-situ deformable nanorings Nano Convergence (IF 11.7) Pub Date : 2023-03-30 Wei Tao, Florian Laible, Abdelhamid Hmima, Thomas Maurer, Monika Fleischer
Nanorings (NRs) with their intrinsic cavities have attracted interest as plasmonic nanoparticles for years, due to the uniform electric field enhancement inside the cavity, lower plasmon damping effects and comparatively high refractive index sensitivities. In the present work, we successfully fabricated a series of Au NR arrays on flexible polydimethylsiloxane substrates by taking advantage of state-of-the-art
-
Spectroscopic single-molecule localization microscopy: applications and prospective Nano Convergence (IF 11.7) Pub Date : 2023-03-21 Benjamin Brenner, Cheng Sun, Françisco M. Raymo, Hao F. Zhang
Single-molecule localization microscopy (SMLM) breaks the optical diffraction limit by numerically localizing sparse fluorescence emitters to achieve super-resolution imaging. Spectroscopic SMLM or sSMLM further allows simultaneous spectroscopy and super-resolution imaging of fluorescence molecules. Hence, sSMLM can extract spectral features with single-molecule sensitivity, higher precision, and higher
-
Anisotropy of impact ionization in WSe2 field effect transistors Nano Convergence (IF 11.7) Pub Date : 2023-03-17 Taeho Kang, Haeju Choi, Jinshu Li, Chanwoo Kang, Euyheon Hwang, Sungjoo Lee
Carrier multiplication via impact ionization in two-dimensional (2D) layered materials is a very promising process for manufacturing high-performance devices because the multiplication has been reported to overcome thermodynamic conversion limits. Given that 2D layered materials exhibit highly anisotropic transport properties, understanding the directionally-dependent multiplication process is necessary
-
Demonstration of p-type stack-channel ternary logic device using scalable DNTT patterning process Nano Convergence (IF 11.7) Pub Date : 2023-03-09 Yongsu Lee, Heejin Kwon, Seung-Mo Kim, Ho-In Lee, Kiyung Kim, Hae-Won Lee, So-Young Kim, Hyeon Jun Hwang, Byoung Hun Lee
A p-type ternary logic device with a stack-channel structure is demonstrated using an organic p-type semiconductor, dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DNTT). A photolithography-based patterning process is developed to fabricate scaled electronic devices with complex organic semiconductor channel structures. Two layers of thin DNTT with a separation layer are fabricated via the low-temperature
-
Correction: Investigation of the mechanism of the anomalous Hall effects in Cr2Te3/(BiSb)2(TeSe)3 heterostructure Nano Convergence (IF 11.7) Pub Date : 2023-02-20 Seong Won Cho, In Hak Lee, Youngwoong Lee, Sangheon Kim, Yeong Gwang Khim, Seung-Young Park, Younghun Jo, Junwoo Choi, Seungwu Han, Young Jun Chang, Suyoun Lee
Correction: Nano Convergence (2023) 10:2 https://doi.org/10.1186/s40580-022-00348-0 Following publication of the original article [1], the author noticed an error in the corresponding authorship of the article. The typesetter has inadvertently missed to include co-corresponding authorship to Young Jun Chang at the time of correction process. This has been corrected with this erratum. S.W. Cho, I.H
-
Machine-learning-assisted analysis of transition metal dichalcogenide thin-film growth Nano Convergence (IF 11.7) Pub Date : 2023-02-20 Hyuk Jin Kim, Minsu Chong, Tae Gyu Rhee, Yeong Gwang Khim, Min-Hyoung Jung, Young-Min Kim, Hu Young Jeong, Byoung Ki Choi, Young Jun Chang
In situ reflective high-energy electron diffraction (RHEED) is widely used to monitor the surface crystalline state during thin-film growth by molecular beam epitaxy (MBE) and pulsed laser deposition. With the recent development of machine learning (ML), ML-assisted analysis of RHEED videos aids in interpreting the complete RHEED data of oxide thin films. The quantitative analysis of RHEED data allows