ACS Applied Nano Materials最新文献_第9页

Flash-Induced Thermochemical Heterostructuring of a Nickel Oxide/Zinc Oxide Nanomesh for NO2 Sensing 用于NO2传感的氧化镍/氧化锌纳米网的闪致热化学异质结构

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0171710.1021/acsanm.5c01717

Gana Park, Myungwoo Choi, Heon-Jin Choi, Young-Seok Shim, Sang-Joon Kim*, Jeong-O Lee* and Donghwi Cho*,

{"title":"Flash-Induced Thermochemical Heterostructuring of a Nickel Oxide/Zinc Oxide Nanomesh for NO2 Sensing","authors":"Gana Park, Myungwoo Choi, Heon-Jin Choi, Young-Seok Shim, Sang-Joon Kim*, Jeong-O Lee* and Donghwi Cho*, ","doi":"10.1021/acsanm.5c0171710.1021/acsanm.5c01717","DOIUrl":"https://doi.org/10.1021/acsanm.5c01717https://doi.org/10.1021/acsanm.5c01717","url":null,"abstract":"Semiconducting zinc oxide (ZnO)-based chemiresistors are widely used in environmental monitoring and human health applications due to their scalability, cost-effectiveness, and rapid response to hazardous gases. However, despite its high gas sensitivity, ZnO suffers from poor selectivity. In this study, we present a rational strategy to simultaneously enhance the sensitivity and selectivity of ZnO-based gas sensors by integrating an electrospun template-assisted nanostructuring approach with flash-induced thermochemical heterostructuring. Specifically, we synthesized a ZnO nanomesh via the electrospinning of polyacrylonitrile, followed by ZnO deposition on the nanofibers through atomic layer deposition and subsequent plasma treatment and thermal annealing to remove the polymer template. A xenon flash lamp treatment in the presence of a metal precursor facilitated the in situ formation of nickel oxide (NiO), inducing a pronounced photothermal effect and enabling controlled heterostructuring. As a proof of concept, NiO/ZnO heterostructures demonstrated significantly enhanced nitrogen dioxide sensitivity at 300 °C (RGas/RN2=420 at 20 ppm), along with rapid response (200 s) and recovery (50 s) times, and a detection limit as low as 0.02 ppm. By contrast, the pristine ZnO nanomesh sensor showed a sensor ratio of RGas/RN2 = 22 at 20 ppm, a response time of 240 s, and a recovery time of 90 s. This remarkable sensitivity enhancement was attributed to the nanoscale porous architecture, which provided an increased surface area and improved selectivity enabled by heterojunction effects. This approach offers a scalable route for designing high-performance gas sensors with customizable selectivity by leveraging the advantages of nanostructured materials.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10704–10716 10704–10716"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FeCo Nanoparticles Embedded in Carbon Microfibers Derived from Conjugated Microporous Polymers for Enhanced Electromagnetic Wave Absorption 共轭微孔聚合物微纤维中嵌入FeCo纳米颗粒增强电磁波吸收

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0147410.1021/acsanm.5c01474

Yue Wang, Changhuai Ye, Nan Meng* and Yaozu Liao*,

{"title":"FeCo Nanoparticles Embedded in Carbon Microfibers Derived from Conjugated Microporous Polymers for Enhanced Electromagnetic Wave Absorption","authors":"Yue Wang, Changhuai Ye, Nan Meng* and Yaozu Liao*, ","doi":"10.1021/acsanm.5c0147410.1021/acsanm.5c01474","DOIUrl":"https://doi.org/10.1021/acsanm.5c01474https://doi.org/10.1021/acsanm.5c01474","url":null,"abstract":"Significant progress has been made in developing multicomponent carbon-based fibers. However, challenges remain in accurately controlling their composition and microstructure to achieve lightweight fiber materials with high absorption and a broad frequency bandwidth. Herein, we report a microwave-absorbing FeCo/C fiber derived from conjugated microporous polymers (CMPs) by electrospinning and carbonization. The incorporation of CMP-derived carbon not only promotes the uniform dispersion of FeCo nanoparticles and conductive network formation, but also enhances the polarization loss within the microfiber’s carbon skeleton. The multicomponent design strategy promotes impedance matching, where FeCo nanoparticles provide substantial magnetic loss while the carbon-based microfibers establish long-distance conductive channels with enhanced polarization loss and multiple reflections. Consequently, the optimized FeCo/C fiber exhibits excellent microwave absorption performance, with a minimum reflection loss of −59.9 dB and an effective absorption bandwidth of 5.1 GHz (thickness: 2.5 mm). This work will inspire the development of lightweight multicomponent fiber materials with optimized impedance matching and multiple loss mechanisms, and show promising prospects in absorbing stealth applications.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10623–10632 10623–10632"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermite Reactions within Liquid Gallium/Iron Oxide Supraparticles Triggered Via Induction Heating 感应加热触发液态镓/氧化铁超粒子内的铝热剂反应

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0117110.1021/acsanm.5c01171

Theodor Raczka, Philipp Groppe, Katrin Hurle, Michael S. Moritz, Christian Papp, Karl Mandel and Susanne Wintzheimer*,

引用次数: 0

Heterostructured SnO2/CuO Hydrangea Nanocomposites for Highly Sensitive NO2 Detection 异质结构SnO2/CuO绣球花纳米复合材料的高灵敏度NO2检测

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0129310.1021/acsanm.5c01293

Shaobo Li, Xinchao Li, Jiangbin Guo, Xianghong Liu and Jun Zhang*,

{"title":"Heterostructured SnO2/CuO Hydrangea Nanocomposites for Highly Sensitive NO2 Detection","authors":"Shaobo Li, Xinchao Li, Jiangbin Guo, Xianghong Liu and Jun Zhang*, ","doi":"10.1021/acsanm.5c0129310.1021/acsanm.5c01293","DOIUrl":"https://doi.org/10.1021/acsanm.5c01293https://doi.org/10.1021/acsanm.5c01293","url":null,"abstract":"The distinct electronic and chemical characteristics resulting from metal oxide semiconductor heterostructures are of crucial significance to develop advanced sensors. In this research, heterostructured CuO/SnO2 hydrangea nanocomposites are fabricated by atomic layer deposition (ALD) to achieve outstanding NO2 sensing properties. The CuO/SnO2-based sensor demonstrates an extremely high response of 159 to 5 ppm of NO2 at a relatively low operating temperature of 100 °C, which to our best knowledge outperforms the previous CuO-based sensors. The CuO/SnO2 sensor also possesses good selectivity, repeatability, short response-recovery time (45/55 s), and low detection limit (81 ppb). The remarkable sensor performances can be ascribed to the regulation of energy band structure and surface electronic state of the materials. Additionally, the ALD loading of SnO2 increases the crystalline size and strain calculated by X-ray diffraction (XRD) results, but the composite still maintains its nanoscale size (86.2 nm) and high specific surface area (60.11 m2/g). This work proposes an efficient strategy to construct heterojunctions with a regulated band structure at the surface, which endows a great potential in NO2 detection.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10549–10558 10549–10558"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cysteine-Induced Multi-Petal Growth on Gold Nanostructures as SERS Substrates and for Electrochemical CO2 Reduction and Glucose Oxidation 半胱氨酸诱导的以金纳米结构为SERS底物的多花瓣生长及其电化学CO2还原和葡萄糖氧化

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0220610.1021/acsanm.5c02206

Haeji Kim, Hyunsik Hwang, Jiseok Kim, Jonghyeok Park, Seokjo Hong, Sungjoo Kim, Yongsoo Yang and Hyunjoon Song*,

{"title":"Cysteine-Induced Multi-Petal Growth on Gold Nanostructures as SERS Substrates and for Electrochemical CO2 Reduction and Glucose Oxidation","authors":"Haeji Kim, Hyunsik Hwang, Jiseok Kim, Jonghyeok Park, Seokjo Hong, Sungjoo Kim, Yongsoo Yang and Hyunjoon Song*, ","doi":"10.1021/acsanm.5c0220610.1021/acsanm.5c02206","DOIUrl":"https://doi.org/10.1021/acsanm.5c02206https://doi.org/10.1021/acsanm.5c02206","url":null,"abstract":"Highly branched nanoparticles are an attractive design that harnesses the advanced properties of nanomaterials for various applications. However, the diversity of branched morphology complicates detailed identification without generalized synthetic approaches. In this study, we develop a universal method for overgrowing Au multipetals (MPs) on various core materials by manipulating cysteine injection sequences during synthesis. This approach enables uniform MP formation on spheres, rods, and triangular plates, even in a large-scale synthesis. Individual petals comprise single-crystalline planes and curved edges with high-index facets. As surface-enhanced Raman spectroscopy substrates, Au MPs exhibit detection limits that are 2 orders of magnitude lower than those of bare spheres. Additionally, Au MPs significantly enhance catalytic performance in electrochemical CO2 reduction and glucose oxidation. This study provides a straightforward synthesis strategy for a class of branched Au nanoparticles and demonstrates their potential applications for chemical and biosensing, catalysis, and photonic devices.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10788–10796 10788–10796"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phosphate-Grafted Ti3C2Tx Nanosheets for Enhanced Dispersion in Nonpolar Solvents and Improved Conductivity and Stability 磷酸盐接枝Ti3C2Tx纳米片在非极性溶剂中的分散性增强，电导率和稳定性提高

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0119610.1021/acsanm.5c01196

Fangzheng Xi, Yunfa Si, Zibo Chen, Shaowen Cao, Geng Wu, Peng Li, Bo Liu*, Cheng Chen* and Daping He*,

{"title":"Phosphate-Grafted Ti3C2Tx Nanosheets for Enhanced Dispersion in Nonpolar Solvents and Improved Conductivity and Stability","authors":"Fangzheng Xi, Yunfa Si, Zibo Chen, Shaowen Cao, Geng Wu, Peng Li, Bo Liu*, Cheng Chen* and Daping He*, ","doi":"10.1021/acsanm.5c0119610.1021/acsanm.5c01196","DOIUrl":"https://doi.org/10.1021/acsanm.5c01196https://doi.org/10.1021/acsanm.5c01196","url":null,"abstract":"Ti3C2Tx MXene’s industrial adoption is hindered by its instability in humid environments and poor dispersion in nonpolar processing solvents, while conventional surface functionalization strategies severely degrade its high electrical conductivity. Herein, we address this challenge through a ligand engineering strategy using phosphate-grafted organic ligands with tailored chain lengths. Among these, phenylphosphonic acid (PhPA) is identified as the optimal ligand, enabling stable dispersion of Ti3C2Tx in 13 organic solvents (spanning from polar to nonpolar) while retaining 47.8% of pristine conductivity (14.38 × 104 S m–1), which is a significant improvement over existing methods. The PhPA-modified Ti3C2Tx exhibits exceptional environmental stability, maintaining 93% of its electromagnetic interference shielding efficiency after 180 days in humid air and showing resistance to degradation in strong alkali, seawater, and thermal exposure up to 200 °C. Mechanistic studies reveal that minimal interlayer expansion reduces electron hopping barriers and interfacial resistance, while π-electron interactions between benzene rings and the Ti–O–P covalent network create electron highways that enhance charge transfer and suppress oxidation. This work provides a rational ligand design principle to optimize MXene stability and conductivity in organic solvents, thereby advancing their applications in energy storage and electronics.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10486–10493 10486–10493"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemiluminescence Sensor Based on DNA Octahedron and Nanoclusters for M6A Analysis 基于DNA八面体和纳米簇的电化学发光传感器用于M6A分析

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0204810.1021/acsanm.5c02048

Chenghong Li, Huamin Liu, Yue Hu, Lulu Li, Lichao Fang, Lina Wang, Shuang Xu, Mimi Li, Yang Xiang*, Hui Huang* and Junsong Zheng*,

{"title":"Electrochemiluminescence Sensor Based on DNA Octahedron and Nanoclusters for M6A Analysis","authors":"Chenghong Li, Huamin Liu, Yue Hu, Lulu Li, Lichao Fang, Lina Wang, Shuang Xu, Mimi Li, Yang Xiang*, Hui Huang* and Junsong Zheng*, ","doi":"10.1021/acsanm.5c0204810.1021/acsanm.5c02048","DOIUrl":"https://doi.org/10.1021/acsanm.5c02048https://doi.org/10.1021/acsanm.5c02048","url":null,"abstract":"N6-methyladenosine (m6A) plays a significant role in tumor regulation, and quantitatively detecting m6A-RNA methylation levels can aid in the early diagnosis of cancer. This study proposes a highly specific and sensitive electrochemiluminescence (ECL) biosensor based on a DNA octahedron combined with gold/silver nanoclusters (AuAg NCs) for detecting m6A-RNA abundance. The DNA octahedron acts as a “bridge” between the electrode and the target sequence, and its three-dimensional framework effectively transforms the two-dimensional probe capture at the electrode into a three-dimensional capture. This design enhances the target (T) capture capability by dispersing the probe across different planes, which reduces the possibility of entanglement between single strands. Additionally, the rigidity of the octahedron stabilizes its binding with the capture (CP) probe, further stabilizing and effectively improving the detection sensitivity. AuAg NCs are utilized as signal amplification elements, where Au nanoclusters covalently combine with Ag nanoclusters to achieve synergistic effects, providing more stable electroluminescence signals. When these nanoclusters are combined with the m6A antibody, the target is specifically recognized by the antibody, enhancing both the specificity and sensitivity of the sensor. Under optimal experimental conditions, the sensor demonstrated a linear range of 10–7–10–14 M and a detection limit as low as 140 aM, with good repeatability and stability. This detection strategy exhibits excellent specificity and sensitivity, offering a promising platform for m6A detection.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10765–10774 10765–10774"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon Nanotubes and CoNiO Nanoparticle-Modified Porous Metal Oxide as an Efficient Sulfur Host for Advanced Lithium–Sulfur Batteries 碳纳米管和CoNiO纳米颗粒修饰多孔金属氧化物作为先进锂硫电池的高效硫宿主

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0094910.1021/acsanm.5c00949

Haisheng Han, Hongyu Wang, Yongguang Zhang and Guihua Liu*,

{"title":"Carbon Nanotubes and CoNiO Nanoparticle-Modified Porous Metal Oxide as an Efficient Sulfur Host for Advanced Lithium–Sulfur Batteries","authors":"Haisheng Han, Hongyu Wang, Yongguang Zhang and Guihua Liu*, ","doi":"10.1021/acsanm.5c0094910.1021/acsanm.5c00949","DOIUrl":"https://doi.org/10.1021/acsanm.5c00949https://doi.org/10.1021/acsanm.5c00949","url":null,"abstract":"Rational design of a porous sulfur host material is important to mitigate the lithium polysulfide (LiPS) shuttle effect in lithium–sulfur (Li–S) batteries. In this study, a three-dimensionally ordered macropore N-doped TiO2 embedded with dense carbon nanotubes and CoNiO nanoparticles (CNT/CoNiO@N–TiO2) is prepared as a sulfur host material. This porous structured metal oxide N–TiO2 framework offers good structural stability and polarity toward LiPS accommodation and adsorption. The in situ-grown CNT within the porous N–TiO2 provides a physical barrier for the LiPS migration and benefits the conductivity of the host material. Furthermore, the embedded CoNiO nanoparticles have high synergistic catalytic activity for the LiPS conversion. Accordingly, the sulfur-loaded CNT/CoNiO@N–TiO2 host achieves a high initial capacity of 1004 mA h g–1 at 0.2 C and excellent cycling performance with a capacity decay of 0.047% per cycle in 500 cycling test at 1.0 C. This work provides an effective strategy for the design of metal oxide-based sulfur host materials in Li–S batteries.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10351–10358 10351–10358"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Synthesis of H2O2 on B2O3/F-Doped Carbon Nanomaterials for Applications in Green Electrocatalysis B2O3/ f掺杂碳纳米材料高效合成H2O2及其在绿色电催化中的应用

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-09 DOI: 10.1021/acsanm.5c0142810.1021/acsanm.5c01428

Yang Yang, Hui-Juan Zhang*, Yiming Tao, Haixiang Luo and Yuhua Xue,

{"title":"Efficient Synthesis of H2O2 on B2O3/F-Doped Carbon Nanomaterials for Applications in Green Electrocatalysis","authors":"Yang Yang, Hui-Juan Zhang*, Yiming Tao, Haixiang Luo and Yuhua Xue, ","doi":"10.1021/acsanm.5c0142810.1021/acsanm.5c01428","DOIUrl":"https://doi.org/10.1021/acsanm.5c01428https://doi.org/10.1021/acsanm.5c01428","url":null,"abstract":"Hydrogen peroxide (H2O2) is predominantly produced via the anthraquinone process, which suffers from inherent drawbacks, such as complex operational procedures and environmental pollution. In contrast, the two-electron oxygen reduction reaction (2e ORR) for H2O2 synthesis has garnered significant attention due to its eco-friendly nature and sustainable potential. In this study, an efficient nonmetal electrocatalyst, B2O3/F-CNT-h, for H2O2 synthesis is developed. S/F/P-doped carbon nanotubes (CNTs) are first synthesized via hydrothermal synthesis and pyrolysis methods. Among them, the F-doped CNTs prepared through hydrothermal synthesis (F-CNT-h) exhibit superior 2e ORR performance in alkaline media. B2O3/F-CNT-h is then formed by annealing F-CNT-h with H3BO3 to improve the H2O2 synthesis. Electrochemical evaluations in 0.1 M KOH reveal that the optimized B2O3/F-CNT-h-700 achieves a H2O2 selectivity (H2O2%) of 92% within the potential range of 0.2–0.7 V (vs RHE), accompanied by an electron transfer number (n) of 2.2 and a Faradaic efficiency (FE%) of 87.7%. This work establishes a green catalytic strategy for 2e ORR electrocatalysts, enabling industrial-grade H2O2 electrosynthesis in environmental remediation and medical-grade disinfection.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10603–10610 10603–10610"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

InAs Nanowire-Based Twin Electrical Sensors Enabling Simultaneous Gas Detection. 基于InAs纳米线的双电传感器，可同时进行气体检测。

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2025-05-08 eCollection Date: 2025-05-23 DOI: 10.1021/acsanm.4c07238

Camilla Baratto, Egit Musaev, Valeria Demontis, Stefano Luin, Valentina Zannier, Lucia Sorba, Guido Faglia, Luigi Rovati, Francesco Rossella

{"title":"InAs Nanowire-Based Twin Electrical Sensors Enabling Simultaneous Gas Detection.","authors":"Camilla Baratto, Egit Musaev, Valeria Demontis, Stefano Luin, Valentina Zannier, Lucia Sorba, Guido Faglia, Luigi Rovati, Francesco Rossella","doi":"10.1021/acsanm.4c07238","DOIUrl":"10.1021/acsanm.4c07238","url":null,"abstract":"Epitaxially grown InAs NWs are relevant for electrical sensing applications due to the Fermi level pinning at the NW surface and are highly sensitive to the surrounding environment. While a single NW growth batch consists of millions of virtually identical replicas of the same NW, real samples display subtle differences in NW size, shape, and structure, which may affect detection performance. Here, electrical gas detection is investigated in two nominally identical or twin devices fabricated starting from the same NW growth batch. Two individual wurtzite InAs NWs are placed onto a fabrication substrate at a 2 μm distance with a 90° relative orientation, each NW is electrically contacted, and the nanodevices are exposed to humidity and NO2 flux diluted in synthetic air. Electrical signal versus time is measured simultaneously in each nanodevice upon exposure to different gases and concentrations. The observed detection limit is 2 ppm for NO2 and 20% for relative humidity. Correlation analysis methods are exploited by calculating autocorrelation and cross-correlation functions for the experimental signal pairs, indicating lack of cross-correlation in the signal noise of the two nanodevices, suggesting that signal differences between the twins could be ascribed mainly to nonidealities in the fabrication protocol and nanoscopic differences in the two nanostructures, rather than to different environmental conditions. While InAs nanowires are used here as demonstrators of simultaneous gas sensing, the approach is general and virtually applies to any nanoscale material suitable for the realization of two-terminal electronic devices.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 20","pages":"10275-10286"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12107530/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0