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Enhancing control in spatial atomic layer deposition: insights into precursor diffusion, geometric parameters, and CVD mitigation strategies Nanotechnology (IF 3.5) Pub Date : 2024-02-28 Thien Thanh Nguyen, Diem Nguyen Thi Kieu, Hao Van Bui, Loan Le Thi Ngoc, Viet Huong Nguyen
In recent years, spatial atomic layer deposition (SALD) has gained significant attention for its remarkable capability to accelerate ALD growth by several orders of magnitude compared to conventional ALD, all while operating at atmospheric pressure. Nevertheless, the persistent challenge of inadvertent contributions from chemical vapor deposition (CVD) in SALD processes continues to impede control
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Magnetoresistance properties in nickel-catalyzed, air-stable, uniform, and transfer-free graphene Nanotechnology (IF 3.5) Pub Date : 2024-02-28 Bo-Yu Chen, Bo-Wei Chen, Wu-Yih Uen, Chi Chen, Chiashain Chuang, Dung-Sheng Tsai
A transfer-free graphene with high magnetoresistance (MR) and air stability has been synthesized using nickel-catalyzed atmospheric pressure chemical vapor deposition. The Raman spectrum and Raman mapping reveal the monolayer structure of the transfer-free graphene, which has low defect density, high uniformity, and high coverage (>90%). The temperature-dependent (from 5 to 300 K) current–voltage (I–V)
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Interface modification for efficient carbon-electrode CsPbI2Br perovskite solar cells using ionic liquid Nanotechnology (IF 3.5) Pub Date : 2024-02-28 Yaping Zhang, Tao Wang, Yanan Wang, Jing Chen, Lin Peng, Xiaolin Liu, Jia Lin
All-inorganic CsPbI2Br, as a promising photovoltaic (PV) material, have attracted extensive research attention in society for its outstanding thermal stability and appropriate trade-offs. Carbon-based perovskite solar cells (C-PSCs) without hole transporting layer (HTL) have shown great potential in terms of cost-effectiveness and stability. However, the inevitable defects on the surface of CsPbI2Br
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Wet cleaning of Ta-based extreme ultraviolet photomasks at room temperature Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Jehwan Park, Woong Choi, Jihyun Kim
Owing to the wavelength-dependent limits of the deep ultraviolet exposure process, the semiconductor industry introduced extreme ultraviolet (EUV) lithography operating at a 13.5 nm wavelength. Traditional photomasks employ pellicles for protection; however, EUV-specific pellicles are not widely applicable to commercial processes, requiring the development of a EUV photomask cleaning method. In this
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Metal nanoparticles to improve the heat resilience in wheat (Triticum aestivum L.) Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Gyanika Shukla, Amardeep Singh, Neha Chaudhary, Swati Singh, Namita Basnal, Shailendra Singh Gaurav
This study evaluated the efficacy of phytogenic silver and zinc nanoparticles in improving heat resilience in various wheat varieties. The silver and zinc nanoparticles were synthesized using plant leaf extract and characterized using various techniques. Four wheat varieties (DBW187, Black Wheat, DBW 50, and PBW 621) were subjected to field trials. The random block design was used, and nanoparticles
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Tunable defect engineering of Mo/TiON electrode in angstrom-laminated HfO2/ZrO2 ferroelectric capacitors towards long endurance and high temperature retention Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Sheng-Min Wang, Cheng-Rui Liu, Yu-Ting Chen, Shao-Chen Lee, Ying-Tsan Tang
A novel defect control approach based on laminated HfO2/ZrO2 with multifunctional TiN/Mo/TiO x N y electrode is proposed to significantly improve the endurance and data retention in HZO-based ferroelectric capacitor. The O-rich interface reduces leakage current and prolong the endurance up to 1011 cycles while retaining a 2Pr value of 34 (μC cm–2) at 3.4 MV cm−1. Using first-principles calculations
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Exfoliated MXene–AuNPs hybrid in sensing and multiple catalytic hydrogenation reactions Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Yogesh Kumar, Tijin Thomas, E Pérez-Tijerina, N K R Bogireddy, V Agarwal
The increasing use of nanomaterials in consumer products is expected to lead to environmental contamination sometime soon. As water pollution is a pressing issue that threatens human survival and impedes the promotion of human health, the search for adsorbents for removing newly identified contaminants from water has become a topic of intensive research. The challenges in the recyclability of contaminated
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Atomic layer deposition of SnS2 film on a precursor pre-treated substrate Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Jungtae Kim, Dowwook Lee, Jangho Bae, Taeyoon Lee, Hyeongtag Jeon
Two-dimensional (2D) materials are attracting attention because of their outstanding physical, chemical, and electrical properties for applications of various future devices such as back-end-of-line field effect transistor (BEOL FET). Among many 2D materials, tin disulfide (SnS2) material is advantageous for low temperature process due to low melting point that can be used for flexible devices and
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An ultra-sensitive SARS-CoV-2 antigen optical biosensor based on angiotensin converting enzyme 2 (ACE-2) functionalized magnetic-fluorescent silica nanoparticles Nanotechnology (IF 3.5) Pub Date : 2024-02-27 Muhammad Yovinanda Maulana, Raissa Raissa, Ahmad Nurrudin, Agustina Sus Andreani, Marissa Angelina, Ni Luh Wulan Septiani, Brian Yuliarto, S N Aisyiyah Jenie
This work reports on the design and synthesis of an angiotensin-converting enzyme 2 (ACE-2) functionalized magnetic fluorescent silica nanoparticles (Fe-FSNP) as a biosensing platform to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen. Iron oxide (Fe3O4) nanoparticles were synthesized via ultrasonic-assisted coprecipitation and then coated with fluorescent silica nanoparticles
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Porous rod-shaped Fe2O3/Ag/BP: a novel substrate for highly sensitive SERS detection of persistent organic pollutants Nanotechnology (IF 3.5) Pub Date : 2024-02-23 Hang Chen, Caiqin Han, Le Zhang, Ying Wu
A surface enhanced Raman scattering (SERS) substrate of porous rod-shaped ferric oxide (Fe2O3) combined with silver nanoparticles (Ag NPs) and black phosphorus (Fe2O3/Ag/BP) was fabricated to detect the persistent organic pollutants (POPs) at low concentration. The organic pollutant Rhodamine 6G (R6G) was used as the probe molecule to study the performances of Fe2O3/Ag/BP, and 4-chlorobiphenyl (PCB-3)
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Synthesizing high performance LNMO cathode materials with porous structure by manipulating reynolds number in a microreactor Nanotechnology (IF 3.5) Pub Date : 2024-02-23 Tongli Liu, Hongjie Deng, Fa He, Yuqing Wu, Zhenguo Wu, Fang Wan, Ting Chen, Wenhua Xu, Yang Song, Xiaodong Guo
The demand for Lithium-ion batteries (LIBs) has significantly grown in the last decade due to their extensive use electric vehicles. To further advance the commercialization of LIBs for various applications, there is a pressing need to develop electrode materials with enhanced performance. The porous microsphere morphology LiNi x Mn2–x O4 (LNMO) is considered to be an effective material with both high
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Enhancing mechanical properties of composite solid electrolyte by ultra-high molecular weight polymers Nanotechnology (IF 3.5) Pub Date : 2024-02-23 Hongjie Deng, Fa He, Tongli Liu, Meng Ye, Fang Wan, Xiaodong Guo
Composite solid electrolytes combining the advantages of inorganic and polymer electrolytes are considered as one of the promising candidates for solid-state lithium metal batteries. Compared with ceramic-in-polymer electrolyte, polymer-in-ceramic electrolyte displays excellent mechanical strength to inhibit lithium dendrite. However, polymer-in-ceramic electrolyte faces the challenges of lack of flexibility
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Density functional theory for doped TiO2: current research strategies and advancements Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Siarhei Zavatski, Elina Neilande, Hanna Bandarenka, Anatoli Popov, Sergei Piskunov, Dmitry Bocharov
Since the inception of the density functional theory (DFT) by Hohenberg and Kohn in 1964, it rapidly became an indispensable theoretical tool across various disciplines, such as chemistry, biology, and materials science, among others. This theory has ushered in a new era of computational research, paving the way for substantial advancements in fundamental understanding. Today, DFT is routinely employed
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Fabrication of high quality lead-free double perovskite Cs2AgBiBr6 thin film and its application in memristor with ultralow operation voltage Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Xiaofang Zhang, Ke Wang, Zhenyu Li, Juanjuan Qi, Dongke Li, Jianqiang Luo, Jian Liu
Recently, the lead-free double perovskite Cs2AgBiBr6 has been considered as a promising candidate for next-generation nonvolatile memory and artificial synapse devices due to its high stability and low toxicity compared to its lead-based counterparts. In this work, we developed a simple and effective method to produce high-quality lead-free double perovskite Cs2AgBiBr6 thin films without pinholes and
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Core–shell engineered g-C3N4 @ NaNbO3 for enhancing photocatalytic reduction of CO2 Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Shuo Wang, Haotian Yin, Lei Wang, Jing Ding, Jinfeng Zhang, Hui Wan, Guofeng Guan
Photocatalytic reduction of carbon dioxide is a technology that effectively utilizes CO2 and solar energy. Sodium niobate (NaNbO3) has received much attention in the field of photocatalysis due to its excellent photocatalytic properties. However, the application of NaNbO3 in the field of photocatalysis is still limited by poor reaction to visible light and easy recombination of photo-generated carriers
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Giant enhancement of fluorescence resonance energy transfer based on nanoporous gold with small amount of residual silver Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Lianmin Cui, Ling Zhang, Zhexiao Li, Zhiyu Jing, Luyi Huang, Heping Zeng
Fluorescence resonance energy transfer (FRET) was found strongly enhanced by plasmon resonance. In this work, Nanoporous Gold with small amount of residual silver was used to form nanoporous gold/organic molecular layer compound with PSS and PAH. The ratio of its specific gold and silver content is achieved by controlling the time of its dealloying. Layered films of polyelectrolyte multilayers were
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High-performance MoS2 phototransistors with Hf1–x Al x O back-gate dielectric layer grown by plasma enhanced atomic layer deposition Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Qiu-Jun Yu, Xiao-Xi Li, Yu-Chun Li, Si-Tong Ding, Teng Huang, Ze-Yu Gu, Lang-Xi Ou, Hong-Liang Lu
Molybdenum sulfide (MoS2) as an emerging optoelectronic material, shows great potential for phototransistors owing to its atomic thickness, adjustable band gap, and low cost. However, the phototransistors based on MoS2 have been shown to have some issues such as large gate leakage current, and interfacial scattering, resulting in suboptimal optoelectronic performance. Thus, Al-doped hafnium oxide (Hf1–x
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Switchable bi-functional metasurface for absorption and broadband polarization conversion in terahertz band using vanadium dioxide and photosensitive silicon Nanotechnology (IF 3.5) Pub Date : 2024-02-22 Bing Luo, Yunping Qi, Zihao Zhou, Qiang Shi, Xiangxian Wang
We proposed a bi-functional switchable metasurface based on vanadium dioxide (VO2) and photosensitive silicon. The metasurface functions as a transmissive polarization converter in its insulating state with asymmetric transmission characteristics. It attains a remarkable polarization conversion rate (PCR) surpassing 90% and a notable maximum asymmetric transmission (AT) parameter value of 0.73. This
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Low-temperature diffusion in thin-film Pt-(Au-)-Co heterostructures: a structural and magnetic characterization Nanotechnology (IF 3.5) Pub Date : 2024-02-21 Roman Pedan, Pavlo Makushko, Yurii Yavorskyi, Oleksandr Dubikovskyi, Andrii Bodnaruk, Andrii Burmak, Vladimir Golub, Svitlana Voloshko, René Hübner, Denys Makarov, Igor Vladymyrskyi
Formation of functional thin films for nanoelectronics and magnetic data storage via thermally induced diffusion-driven structural phase transformations in multilayer stacks is a promising technology-relevant approach. Ferromagnetic thin films based on Co Pt alloys are considered as a material science platform for the development of various applications such as spin valves, spin orbit torque devices
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Effectively coupling of SnSe2 nanosheet with N, Se co-doped carbon nanofibers as self-standing anode for lithium-ion batteries Nanotechnology (IF 3.5) Pub Date : 2024-02-21 Xiangdong Guo, Kaixuan Guo, Song Chen, Junfei Liang, Jian Zhu
Tin selenides possess layered structure and high theoretical capacity, which is considered as desirable anode material for lithium-ion batteries. However, its further development is limited by the low intrinsic electrical conductivity and sluggish reaction kinetics. Herein, a well-designed structure of SnSe2 nanosheet attached on N, Se co-doped carbon nanofibers (SnSe2@CNFs) is fabricated as self-standing
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Caralluma pauciflora based Ag-NPs activate ROS - induced apoptosis through down-regulation of AKT, mTOR and pI3K signaling in human gastric cancer (AGS) cells Nanotechnology (IF 3.5) Pub Date : 2024-02-21 Renuga Devi Navaneethan, Packia Lekshmi N C J, Mariselvam Ramaiah, Rajeswari Ravindran, Ananth Kumar T, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Ananthi Sivagnanam, Ponnani Kaja Mideen Mohemedibrahim
The phytochemicals found in Caralluma pauciflora were studied for their ability to reduce silver nitrate in order to synthesise silver nanoparticles (AgNPs) and characterise their size and crystal structure. Thunbergol, 1,1,6-trimethyl-3-methylene-2-(3,6,9,13-tetram, Methyl nonadecanoate, Methyl cis-13,16-Docosadienate, and (1R,4aR,5S)-5-[(E)-5-Hydroxy-3-methylpent were the major compounds identified
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Structural, chemical, and magnetic investigation of a graphene/cobalt/platinum multilayer system on silicon carbide Nanotechnology (IF 3.5) Pub Date : 2024-02-21 P Weinert, J Hochhaus, L Kesper, R Appel, S Hilgers, M Schmitz, M Schulte, R Hönig, F Kronast, S Valencia, M Kruskopf, A Chatterjee, U Berges, C Westphal
We investigate the magnetic interlayer coupling and domain structure of ultra-thin ferromagnetic (FM) cobalt (Co) layers embedded between a graphene (G) layer and a platinum (Pt) layer on a silicon carbide (SiC) substrate (G/Co/Pt on SiC). Experimentally, a combination of x-ray photoemission electron microscopy with x-ray magnetic circular dichroism has been carried out at the Co L-edge. Furthermore
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Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure Nanotechnology (IF 3.5) Pub Date : 2024-02-20 Michael S Lodge, Elizabeth Marcellina, Ziming Zhu, Xiao-Ping Li, Dariusz Kaczorowski, Michael S Fuhrer, Shengyuan A Yang, Bent Weber
Three-dimensional Dirac semimetals with square-net non-symmorphic symmetry, such as ternary ZrXY (X = Si, Ge; Y = S, Se, Te) compounds, have attracted significant attention owing to the presence of topological nodal lines, loops, or networks in their bulk. Orbital symmetry plays a profound role in such materials as the different branches of the nodal dispersion can be distinguished by their distinct
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Continuous precision separation of gold using a metal–organic framework/polymer composite Nanotechnology (IF 3.5) Pub Date : 2024-02-20 Emily Mitchell, Dana Hernandez, Ashlin Deatherage, Martin Coull, M Virginia Altoé, Liana Klivansky, Matthew Witman, Daniel T Sun
Critical metals of environmental and economic relevance can be found within complex mixtures, such as mine tailings, electronic waste and wastewater, at trace amounts. Specifically, gold is a critical metal that carries desired redox active properties in various applications, including modern electronics, medicine and chemical catalysis. Here we report the structuring of sub-micron Fe-BTC/PpPDA crystallites
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Unveiling the temperature-dependent thermoelectric properties of the undoped and Na-doped monolayer SnSe allotropes: a comparative study Nanotechnology (IF 3.5) Pub Date : 2024-02-20 H L Shi, Q Z Han, J Yang, L J Gong, Y H Ren, Y H Zhao, H Yang, Q H Liu, Z T Jiang
Motivated by the excellent thermoelectric (TE) performance of bulk SnSe, extensive attention has been drawn to the TE properties of the monolayer SnSe. To uncover the fundamental mechanism of manipulating the TE performance of the SnSe monolayer, we perform a systematic study on the TE properties of five monolayer SnSe allotropes such as α-, β-, γ-, δ-, and ε-SnSe based on the density functional theory
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Increasing gold nanostars SERS response with silver shells: a surface-based seed-growth approach Nanotechnology (IF 3.5) Pub Date : 2024-02-20 Miriam Parmigiani, Veronica Schifano, Angelo Taglietti, Pietro Galinetto, Benedetta Albini
A straightforward method to prepare surface enhanced Raman spectroscopy (SERS) chips containing a monolayer of silver coated gold nanostars (GNS@Ag) grafted on a glass surface is introduced. The synthetic approach is based on a seed growth method performed directly on surface, using GNS as seeds, and involving a green pathway, which only uses silver nitate, ascorbic acid and water, to grow the silver
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Differential pressure sensors based on transfer-free piezoresistive layered PdSe2 thin films Nanotechnology (IF 3.5) Pub Date : 2024-02-20 Yimin Gong, Liwen Liu, Rui Zhang, Jie Lin, Zhuojun Yang, Shaofeng Wen, Yi Yin, Changyong Lan, Chun Li
Piezoresistive layered two-dimensional (2D) crystals offer intriguing promise as pressure sensors for microelectromechanical systems (MEMS) due to their remarkable strain-induced conductivity modulation. However, integration of the conventional chemical vapor deposition grown 2D thin films onto a micromachined silicon platform requires a complex transfer process, which degrades their strain-sensing
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Size control of InP nanowires by in situ annealing and its application to the formation of InAsP quantum dots Nanotechnology (IF 3.5) Pub Date : 2024-02-20 Masahiro Sasaki, Tomoya Akamatsu, Katsuhiro Tomioka, Junichi Motohisa
We carried out in situ annealing of InP nanowires (NWs) in a metal-organic vapor phase epitaxial (MOVPE) growth reactor to control and reduce the tip size of InP NWs. InP NWs were grown by selective-area (SA) MOVPE on partially masked (111)A InP substrates, and annealing was successively applied in tertiarybutylphosphine (TBP) ambient. Initially, the InP NWs had a hexagonal cross-section with {112¯}
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A cathodoluminescence study of InP/InGaP axially heterostructured NWs for tandem solar cells Nanotechnology (IF 3.5) Pub Date : 2024-02-20 I Mediavilla, J Anaya, B Galiana, L Hrachowina, M T Borgström, J Jimenez
Axially heterostructured nanowires (NWs) constitute a promising platform for advanced electronic and optoelectronic nanodevices. The presence of different materials in these NWs introduces a mismatch resulting in complex strain distributions susceptible of changing the band gap and carrier mobility. The growth of these NWs presents challenges related to the reservoir effect in the catalysts droplet
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Novel MoS2-decorated Cu2O hybrid nanoparticles for enhanced non-enzymatic electrochemical cholesterol detection Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Janani K M, Ashok Kumar L, Alagappan M
Precise identification of cholesterol levels is crucial for the early diagnosis of cardiovascular risk factors. This paper presents a novel approach for cholesterol detection that circumvents the reliance on enzymatic processes. Leveraging the unique properties of advanced materials and electrochemical principles, our non-enzymatic approach demonstrates enhanced sensitivity, specificity, and limit
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PdSe2/MoSe2: a promising van der Waals heterostructure for field effect transistor application Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Chetan Awasthi, Afzal Khan, S S Islam
The field-effect transistor (FET) is a fundamental component of semiconductors and the electronic industry. High on-current and mobility with layer-dependent features are required for outstanding FET channel material. Two-dimensional materials are advantageous over bulk materials owing to their higher mobility, high ON/OFF ratio, low tunneling current, and leakage problems. Moreover, two-dimensional
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Preparation of a high-performance H2S gas sensor based on CuO/Co3O4 composite derived from bimetallic MOF Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Zhanhong Li, Xu Wang, Yu Yao, Jiangang Xin, Lili Xie, Yutong Han, Zhigang Zhu
The bimetallic metal–organic frameworks (MOFs), Cu/Co-MOF, was synthesized through a solvothermal method and calcined to obtain CuO/Co3O4 composites. By adjusting the molar ratio between Cu and Co ions, a composite material of CuO/Co3O4 (Cu:Co = 1:1) was developed and showed excellent sensing capabilities, and the response reached as high as 196.3 for 10 ppm H2S detection. Furthermore, the optimal
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Growth optimization and crossover of transport mechanisms in Bi2Se3 thin films Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Megha Malasi, Shivam Rathod, Archana Lakhani, Devendra Kumar
We report the growth, structural characterization, and transport studies of Bi2Se3 thin film on single crystalline silicon (Si), Si/SiO2, quartz, and glass substrates by thermal evaporation method. Our results show that 300 °C is the optimum substrate temperature to obtain the c-axis (001) oriented Bi2Se3 films on all the substrates. The film grown on the Si substrate has the minimum crystalline disorder
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Long indium-rich InGaAs nanowires by SAG-HVPE Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Emmanuel Chereau, Gabin Grégoire, Geoffrey Avit, Thierry Taliercio, Philipp Staudinger, Heinz Schmid, Catherine Bougerol, Agnès Trassoudaine, Evelyne Gil, Ray R LaPierre, Yamina André
We demonstrate the selective area growth of InGaAs nanowires (NWs) on GaAs (111)B substrates using hydride vapor phase epitaxy (HVPE). A high growth rate of more than 50 μm h−1 and high aspect ratio NWs were obtained. Composition along the NWs was investigated by energy dispersive x-ray spectroscopy giving an average indium composition of 84%. This is consistent with the composition of 78% estimated
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Topological electronic states in holey graphyne Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Yong-Cheng Jiang, Toshikaze Kariyado, Xiao Hu
We unveil that the holey graphyne (HGY), a two-dimensional carbon allotrope where benzene rings are connected by two −C≡C− bonds fabricated recently in a bottom-up way, exhibits topological electronic states. Using first-principles calculations and Wannier tight-binding modeling, we discover a higher-order topological invariant associated with C 2 symmetry of the material, and show that the resultant
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Janus HfSSe monolayer: a promising candidate for SO2 and COCl2 gas sensing Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Dalip Kumar, Rajesh Kumar, Rajneesh Chaurasiya
Janus monolayers based on transition metal dichalcogenides have garnered significant interest as potential materials for nano electronic device applications due to their exceptional physical and electronic properties. In this study, we investigate the stability of the Janus HfSSe monolayer using ab initio molecular dynamics simulations and analyze the electronic properties in its pristine state. We
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Low-temperature cluster spin glass transition in the single-domain NiCr2O4 nanoparticles Nanotechnology (IF 3.5) Pub Date : 2024-02-19 Ahmed M Nashaat, Mohamed A Kassem, Abdulaziz Abu El-Fadl, Hiroyuki Nakamura
NiCr2O4 nanoparticles with average particle size ∼15 nm, a single-domain size maintains the bulk canted antiferromagnetic ground state, were synthesized by a microwave combustion method. The magnetic behavior was carefully investigated by static and dynamic magnetic susceptibility measurements. In addition to a spin-glass-like behavior below paramagnetic-ferrimagnetic transition at T C, the NiCr2O4
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Microfabrication of piezoelectric MEMS based on thick LiNbO3 single-crystal films Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Merieme Ouhabaz, Djaffar Belharet, Quentin Micard, Mario Costanza, Giada Giuffrida, Ausrine Bartasyte, Carlo Trigona, Samuel Margueron
Microfabrication procedure of piezoelectric micro electro-mechanical systems based on 5 μm thick LiNbO3 films on SiO2/Si substrate at wafer scale including deep dry etching of thick LiNbO3 films by implementing pulsed mode of Ar/SF6 gas was developed. In particular, two (YXlt)/128°/90°LiNbO3-Si cantilevers with tip mass were fabricated and characterized in terms of resonance frequency (511 and 817
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Self-powered, wide spectral UV response out-of-plane photodetector based on ZnO/porous silicon heterostructure Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Bhanu Prakash Bisht, Vijaykumar Toutam, Sanjay R Dhakate
The photoresponse of the ZnO/porous silicon (p-Si) heterojunction is studied in an out-of-plane contact configuration. p-Si substrate is fabricated by anodic etching followed by the electrochemical deposition of ZnO NR film, forming ZnO/p-Si heterojunction. XRD study is done to understand the effect of the substrate on ZnO film growth in terms of strain and crystal size. UV–vis absorbance spectrum
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Single-layer graphene based resistive humidity sensor enhanced by graphene quantum dots Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Zhenyu Li, Zhihao Cheng, Yaping Wang, Zekun Zhang, Jianhan Wu
Graphene is broadly applied as sensitive sensing material results from its superb features. Concurrently, as a derivative of graphene with 0D structure, graphene quantum dots (GQDs) offer more possibilities as a supportive sensing material due to its adjustable size and functional group modification. In this work, GQDs are introduced to single-layer graphene (SLG) based humidity sensor to enhance the
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Synergistic integration of Ni-metal organic framework/SnS2 nanocomposite and nickel foam electrode for ultrasensitive and selective electrochemical detection of albumin in simulated human blood serum Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Pratiksha Singh, Vinayak Aggrawal, Sushmee Badhulika
Albumin is a vital blood protein responsible for transporting metabolites and drugs throughout the body and serves as a potential biomarker for various medical conditions, including inflammatory, cardiovascular, and renal issues. This report details the fabrication of Ni-metal organic framework/SnS2 nanocomposite modified nickel foam electrochemical sensor for highly sensitive and selective non enzymatic
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Enhancing urine glucose sensing performance through the introduction of two dimensional-transition metal dichalcogenides and gold nanoparticles into silver/UiO-66 chip of surface plasmon resonance Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Yuant Tiandho, Fitri Afriani, Ni Luh Wulan Septiani, Gilang Gumilar, Suprijadi16, Brian Yuliarto
This work presents a high-performance surface plasmon resonance (SPR)-based biosensor for glucose detection. While adding a metal–organic framework layer, UiO-66, to the biosensor improves selectivity and enables direct detection without additional receptors, it does not significantly enhance sensitivity. A SPR-based biosensor is proposed to overcome this limitation by introducing a layer of 2D-transition
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Density-controlled electrochemical synthesis of ZnO nanowire arrays using nanotextured cathode Nanotechnology (IF 3.5) Pub Date : 2024-02-15 Hyeonjin Eom, Junyoung Hur, Sang-Keun Sung, Jun-Ho Jeong, Inkyu Park
Zinc oxide (ZnO) nanowires fabricated via wet chemical synthesis on flexible polymer substrates are inherently unstable against mechanical bending stress because of their high density and weak adhesion to the substrate. We introduce a novel method for controlling the density of such ZnO nanowire arrays using a three-dimensional corrugated metal substrate. These metal substrates, featuring extruded
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Modulating the density of silicon nanowire arrays for high-performance hydrovoltaic devices Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Binbin Zhang, Bingchang Zhang, Guangshang Sheng, Chenyang Gu, Jia Yu, Xiaohong Zhang
Hydrovoltaic devices (HDs) based on silicon nanowire (SiNW) arrays have received intensive attention due to their simple preparation, mature processing technology, and high output power. Investigating the impact of structure parameters of SiNWs on the performance of HDs can guide the optimization of the devices, but related research is still not sufficient. This work studies the effect of the SiNW
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Polydopamine nanoplatform with near infrared light and pH dual stimuli-responsive for chemo-photothermal cancer therapy Nanotechnology (IF 3.5) Pub Date : 2024-02-12 He Tan, Zhong Luo, Mengran Jia, Zhuang Liu, Jinxia An, Hui Gao
Photothermal agent accompanying with thermally responsive materials, displays well controlled drug release property, which is well-received as an outstanding design strategy for simultaneous photothermal/chemotherapy in cancer. Cyanine dye, as the prestigious photothermal agent has shown great potential due to its preeminent near-infrared absorbance and excellent thermal conversion efficiency. However
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Strain engineering of Zeeman and Rashba effects in transition metal dichalcogenide nanotubes and their Janus variants: an ab initio study Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Arpit Bhardwaj, Phanish Suryanarayana
We study the influence of mechanical deformations on the Zeeman and Rashba effects in transition metal dichalcogenide nanotubes and their Janus variants from first principles. In particular, we perform symmetry-adapted density functional theory simulations with spin–orbit coupling to determine the variation in the electronic band structure splittings with axial and torsional deformations. We find significant
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Light and voltage dual-modulated volatile resistive switching in single ZnO nanowires Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Feng Yang, Yongle Zhang, Xue Feng, Junmeng Guo, Gang Cheng, Zuliang Du
A single ZnO nanowire device with volatile resistive switching behavior has been prepared. Different from traditional resistive switching devices, such ZnO nanowire devices do not exhibit resistive switching behaviors under a single bias voltage, and appear resistive switching behavior under the combined action of light stimuli and bias voltage. Through the demonstration of the time-dependent hysteresis
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Direct chemical-vapor-deposition growth of alloyed perovskite microcrystals for tunable emissions Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Xia Shen, Yu Wu, Chanjuan Dang, Pu Li, Pengfei Guo
Tunable composition of perovskite micro/nanostructures are perfect candidate for the designing of multifunctional optoelectronic circuits. Especially, integrated polychromatic luminescence based on the perovskite materials along a single substrate or chip is essential to the integrated photonic devices and multicolor displays. Here, we reported a synthesis of composition tunable CsPbI3(1–x)Br3x (X
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Three-dimensional ordered macroporous design of heterogeneous cobalt–iron phosphides as oxygen evolution electrocatalyst Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Songan Zhao, Weijin Cao, Lu Lu, Zhaoyang Tan, Yanji Wang, Lanlan Wu, Jingde Li
Oxygen evolution reaction (OER) plays a key role in electrochemical conversion, which needs efficient and economical electrocatalyst to boost its kinetics for large-scale application. Herein, a bimetallic CoP/FeP2 heterostructure with a three-dimensional ordered macroporous structure (3DOM-CoP/FeP2) was synthesized as an OER catalyst to demonstrate a heterogeneous engineering induction strategy. By
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Stacking-induced phonon transport engineering of siligene Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Haibin Cao, Yufeng Luo, Wenyan Jiao, Wen Lei, Shihao Han, Huijun Liu
Tunable phonon transport properties of two-dimensional materials are desirable for effective heat management in various application scenarios. Here, we demonstrate by first-principles calculations and Boltzmann transport theory that the lattice thermal conductivity of siligene could be efficiently engineered by forming various stacking configurations. Unlike few-layer graphene, the stacked siligenes
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Structural phase transition and resistive switching properties of Cu x O films during post-thermal annealing Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Juwon Seo, Taeyoung Kim, Yoonsok Kim, Mun Seok Jeong, Eun Kyu Kim
We studied the phase change and resistive switching characteristics of copper oxide (Cu x O) films through post-thermal annealing. This investigation aimed to assess the material’s potential for a variety of electrical devices, exploring its versatility in electronic applications. The Cu x O films deposited by RF magnetron sputtering were annealed at 300, 500, and 700 °C in ambient air for 4 min by
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Large-area, size-controlled and transferable graphene oxide-metal films for humidity sensor Nanotechnology (IF 3.5) Pub Date : 2024-02-12 Xiaobin Zhu, Zhengcun Zhou, Jinlei Zhang, Shuyi Wu
The lack of low-cost methods to synthesize large-area graphene-based materials is still an important factor that limits the practical application of graphene devices. Herein, we present a facile method for producing large-area graphene oxide-metal (GO–M) films, which are size controllable and transferable. The sensor constructed using the GO–M film exhibited humidity sensitivity while being unaffected
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An efficient modeling workflow for high-performance nanowire single-photon avalanche detector Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Zhe Li, Hark Hoe Tan, Chennupati Jagadish, Lan Fu
Single-photon detector (SPD), an essential building block of the quantum communication system, plays a fundamental role in developing next-generation quantum technologies. In this work, we propose an efficient modeling workflow of nanowire SPDs utilizing avalanche breakdown at reverse-biased conditions. The proposed workflow is explored to maximize computational efficiency and balance time-consuming
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Transition from fractal-dendritic to compact islands for the 2D-ferroelectric SnSe on graphene/Ir(111) Nanotechnology (IF 3.5) Pub Date : 2024-02-09 P Aleksa, M Ghorbani-Asl, S Iqbal, M A Martuza, A Bremerich, D Wilks, J Cai, T Chagas, R Ohmann, A Krasheninnikov, C Busse
Epitaxial growth is a versatile method to prepare two-dimensional van der Waals ferroelectrics like group IV monochalcogenides which have potential for novel electronic devices and sensors. We systematically study SnSe monolayer islands grown by molecular beam epitaxy, especially the effect of annealing temperature on shape and morphology of the edges. Characterization of the samples by scanning tunneling
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Ultrashort channel MoSe2 transistors with selenium atoms replaced at the interface: first-principles quantum-transport study Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Chih-Hung Chung, Ting-Yu Chen, Chiung-Yuan Lin, Huang-Wei Chien
Realizing n- and p-type transition metal dichalcogenide (TMD)-based field-effect transistors for nanoscale complementary metal oxide semiconductor (CMOS) applications remains challenging owing to undesirable contact resistance. Quantumtransport calculations were performed by replacing single-sided Se atoms of TMD near the interface with As or Br atoms to further improve the contact resistance. Here
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Bismuth sulfide micro flowers decorated nickel foam as a promising electrochemical sensor for quantitative analysis of melamine in bottled milk samples Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Manaswini Ravipati, Pratiksha Singh, Sushmee Badhulika
Here, we demonstrate hydrothermally grown bismuth sulfide (Bi2S3) micro flowers decorated nickel foam (NF) for electrochemical detection of melamine in bottled milk samples. The orthorhombic phase of hydrothermally grown Bi2S3 is confirmed by the detailed characterization of x-ray diffraction and its high surface area micro flowers-like morphology is investigated via field emission scanning electron
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Fabrication and structural and magnetic properties of spark plasma sintered group-IV diluted magnetic semiconductor Fe-doped SiGe alloys Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Jiafei Li, Xi Zhang, Xiaolian Wang, Xiaofeng Wang, Gang Xiang
Fe-doped SiGe bulk alloys are fabricated using non-equilibrium spark plasma sintering (SPS) and their structure and ferromagnetic and magneto-transport properties are investigated. X-ray diffraction and high-resolution transmission electron microscope measurements show that the obtained alloys are composed of SiGe polycrystals. Magnetization measurements reveal that the Fe-doped SiGe alloys exhibit
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Biomass carbon and Ti2C3MXene quantum dots as ratiometric fluorescent probes for sensitive detecting malachite green in fish sample Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Xiaoyan Wang, Xiaoling Luo, Pintian Zou, Yi-ju Lv, Xiangfei Kong, Yue Huang, Zheng Liu, Guo-Cheng Han
A visual detection method for malachite green (MG) in food was established based on ‘double-response-OFF’ ratiometric fluorescent paper-based sensor. Biomass carbon quantum dots (BCQDs) using broad bean shell, and Ti3C2MXene quantum (MQDs) dots modified by ethylenediamine were synthesized by solvothermal method. The MG and two kinds of quantum dots could undergo static quenching, and the fluorescence
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Conductivity enhancement of Ag nanowire ink by decorating in situ formed Ag particles under low-temperature sintering Nanotechnology (IF 3.5) Pub Date : 2024-02-09 Junyan Feng, Bo Xing, Jiahao Xu
Silver nanowires (AgNWs) have attractive applications in the fabrication of flexible electronics because of their adequate electrical conductivity, mechanical properties, and oxidation resistance. However, the film produced by AgNW ink needs to be sintered at temperatures above 200 °C to obtain high electrical conductivity, which is incompatible with commonly used flexible substrates such as paper
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Plasmon-enhanced multi-photon excited photoluminescence of Au, Ag, and Pt nanoclusters Nanotechnology (IF 3.5) Pub Date : 2024-02-09 J Bornacelli, C Torres-Torres, A Crespo-Sosa, J A Reyes-Esqueda, A Oliver
In this work, we have studied the multi-photon excited photoluminescence from metal nanoclusters (NCs) of Au, Ag and Pt embedded in Al2O3 matrix by ion implantation. The thermal annealing process allows to obtain a system composed of larger plasmonic metal nanoparticles (NPs) surrounded by photoluminescent ultra-small metal NCs. By exciting at 1064 nm, visible emission, ranging from 450 to 800 nm,