ACS Applied Nano Materials最新文献

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Silver Nanoparticle-Embedded Iron-Mediated Gel Matrix: Active Catalyst for CO2 Fixation and A3 Coupling
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-26 DOI: 10.1021/acsanm.4c0454310.1021/acsanm.4c04543
Sumit Mondal, Rajesh Patra, Joydeep Ray and Debajit Sarma*, 
{"title":"Silver Nanoparticle-Embedded Iron-Mediated Gel Matrix: Active Catalyst for CO2 Fixation and A3 Coupling","authors":"Sumit Mondal,&nbsp;Rajesh Patra,&nbsp;Joydeep Ray and Debajit Sarma*,&nbsp;","doi":"10.1021/acsanm.4c0454310.1021/acsanm.4c04543","DOIUrl":"https://doi.org/10.1021/acsanm.4c04543https://doi.org/10.1021/acsanm.4c04543","url":null,"abstract":"<p >Utilizing carbon dioxide (CO<sub>2</sub>) as a primary C1 source and transforming it into valuable compounds offer a viable approach to tackle energy and environmental concerns. The incorporation of metal nanoparticles into template frameworks to create catalytic hybrid materials provides an ideal and promising approach for integrated CO<sub>2</sub> capture and conversion. Anchoring highly dispersed silver nanoparticles (AgNPs) on functional coordination polymer gels (CPGs) to create efficient heterogeneous catalysts for the carboxylative cyclization of propargyl alcohols with CO<sub>2</sub> is a fascinating but challenging prospect. Herein, a straightforward in situ reduction method is demonstrated to anchor well-dispersed AgNPs into triazine-based CPG (Fe_MG) scaffolds. A nitrogen-rich triazine moiety actively helps in nucleation and growth of Ag nanoparticles within the CPG network. Catalytic studies showed that the presence of Ag@Fe_MG allowed an excellent conversion (∼99%) of 2-methylbut-3-yn-2-ol to the corresponding alkylene cyclic carbonate within 24 h at room temperature. The as-synthesized catalyst not only aids in CO<sub>2</sub> chemical fixation but also facilitates a three-component coupling reaction that uses an aldehyde, a terminal alkyne, and a secondary amine to produce propargyl amines. The impressive functional group tolerance of different substrate scopes and reusability, as well as maintaining its activity without any significant decrease during cycles, dictate the efficiency of the Ag@Fe_MG catalyst. Therefore, our study demonstrates a judicious selection of templates to fabricate hybrid composites with silver nanoparticles, which serve as efficient heterogeneous catalysts for CO<sub>2</sub> fixation and multicomponent coupling reactions.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26765–26776 26765–26776"},"PeriodicalIF":5.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843698","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
In Situ Scanning Electron Microscopy Crack Characterization and Resistance Evolution in Cyclically-Strained Ag Nanoflake-Based Inks.
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 eCollection Date: 2024-12-13 DOI: 10.1021/acsanm.4c05133
Qiushi Li, Antonia Antoniou, Olivier N Pierron
{"title":"In Situ Scanning Electron Microscopy Crack Characterization and Resistance Evolution in Cyclically-Strained Ag Nanoflake-Based Inks.","authors":"Qiushi Li, Antonia Antoniou, Olivier N Pierron","doi":"10.1021/acsanm.4c05133","DOIUrl":"https://doi.org/10.1021/acsanm.4c05133","url":null,"abstract":"<p><p>The reliability of nanocomposite conductive inks under cyclic loading is the key to designing robust flexible electronics. Although resistance increases with cycling and models exist, the exact degradation mechanism is not well understood and is critical for developing inks. This study links cracking behavior to changes in electrical resistance by performing in situ cyclic stretch experiments in scanning electron microscopy (SEM) with synchronized resistance measurements. Two screen-printed conductive inks, PE874 and 5025, on thermoplastic polyurethane (TPU) and polyimide (PI) substrates, respectively, were tested using the in situ technique. The obtained SEM images were analyzed with digital image correlation (DIC) to map the strain across cycles. The strain maps show that fatigue damage mainly occurred within the cracks formed during the initial monotonic stretch. There was no delamination at the ink-substrate interface or crack extension along the surface with cycling. Instead, fatigue damage resulted from a combination of crack widening and local shearing within the existing cracks. Crack depth varied based on the ink and substrate properties. The cracks in the 5025 ink on the PI substrate were only partially through the ink thickness, while fully through-thickness cracks were more prevalent in the PE874 ink on the TPU substrate. The 5025 ink showed a faster resistance increase with cycling than the PE874 ink because fatigue damage affected more bridging ink material for partial through-thickness cracks. Higher strain amplitudes caused greater crack widening and shearing and therefore faster resistance increase per cycle.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27173-27184"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11650634/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851602","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
Electrochemical Doping of Potassium in Hexagonal Boron Nitride toward Nanoelectronics
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0531110.1021/acsanm.4c05311
Takatoshi Yamada*, Yuki Okigawa, Ryuichi Kato, Yuta Sato and Takashi Taniguchi, 
{"title":"Electrochemical Doping of Potassium in Hexagonal Boron Nitride toward Nanoelectronics","authors":"Takatoshi Yamada*,&nbsp;Yuki Okigawa,&nbsp;Ryuichi Kato,&nbsp;Yuta Sato and Takashi Taniguchi,&nbsp;","doi":"10.1021/acsanm.4c0531110.1021/acsanm.4c05311","DOIUrl":"https://doi.org/10.1021/acsanm.4c05311https://doi.org/10.1021/acsanm.4c05311","url":null,"abstract":"<p >Potassium-doped hexagonal boron nitride (h-BN) was synthesized by electrochemical (EC) treatment in potassium hydroxide solution, and its electrical properties were measured. Back-gate field-effect transistors (FETs) of EC-treated h-BNs were fabricated using electron beam lithography and lift-off process. The drain current–gate voltage (<i>I</i><sub>D</sub><i>–V</i><sub>G</sub>) characteristics showed that <i>I</i><sub>D</sub> increased with <i>V</i><sub>G</sub>, indicating n-type conduction. In contrast, the <i>I</i><sub>D</sub> of pristine h-BN FETs was below the detection limit of the system. Results of advanced techniques such as annular dark-field scanning transmission electron microscopy, energy-dispersive X-ray spectroscopy, and electron energy loss spectroscopy indicate that agglomerated potassium atoms are intercalated between h-BN layers.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26610–26616 26610–26616"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851103","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
Conductive Hydrogel with Ta4C3TX MXene to Detect Human Movement
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0573510.1021/acsanm.4c05735
Fan Wu, Long Yu, Liyi Zhou, Jiarong Zhang, Ya’nan Zhao, Chunna Yu, Chang Zhao and Guangjian Xing*, 
{"title":"Conductive Hydrogel with Ta4C3TX MXene to Detect Human Movement","authors":"Fan Wu,&nbsp;Long Yu,&nbsp;Liyi Zhou,&nbsp;Jiarong Zhang,&nbsp;Ya’nan Zhao,&nbsp;Chunna Yu,&nbsp;Chang Zhao and Guangjian Xing*,&nbsp;","doi":"10.1021/acsanm.4c0573510.1021/acsanm.4c05735","DOIUrl":"https://doi.org/10.1021/acsanm.4c05735https://doi.org/10.1021/acsanm.4c05735","url":null,"abstract":"<p >Nanocomposite hydrogels with exceptional mechanical properties and sensing performance are ideal for flexible sensors designed to detect human movements and monitor human health. In this study, a composite hydrogel was prepared through in situ polymerization using a combination of poly(methacrylic acid-<i>co</i>-acrylamide) (P(MAA-<i>co</i>-AAM)), poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS), and Ta<sub>4</sub>C<sub>3</sub>T<i><sub>X</sub></i> MXene. The resulting P(MAA-<i>co</i>-AAM)/PEDOT/PSS/Ta<sub>4</sub>C<sub>3</sub>T<i><sub>X</sub></i> hydrogel features a porous network structure closely cross-linked with hydrogen bonds, providing superior mechanical properties such as high elastic modulus, compressive strength, and low hysteresis ratio. The compressive strength of the hydrogel reaches 386.80 kPa, significantly surpassing that of pure P(MAA-<i>co</i>-AAM) hydrogels and other hydrogels. The piezoresistive sensor developed with this hydrogel demonstrates outstanding pressure sensing capabilities: a sensitivity of 0.44 kPa<sup>–1</sup>, a low detection limit of 38.63 Pa, a rapid response time of 44 ms, and a recovery time of 58 ms. Notably, the sensor can sustain over 1000 sensing cycles with remarkable stability and weather resistance. It can accurately detect human body movements, such as joint movements, and even recognize subtle facial microexpressions. Furthermore, the sensor can wirelessly monitor robotic movements through a Bluetooth system and accompanying software. This mechanically robust hydrogel holds significant promise for applications in pressure sensors, human-machine interaction, and portable wearable devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27668–27680 27668–27680"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850926","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
Role of Different Dimensions of Skeleton Proteins in the Endocytosis of Various Shaped Nanoparticles
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0520810.1021/acsanm.4c05208
Zhun Zhang, Yezhuo Zhang, Zhendan Liu and Ye Li*, 
{"title":"Role of Different Dimensions of Skeleton Proteins in the Endocytosis of Various Shaped Nanoparticles","authors":"Zhun Zhang,&nbsp;Yezhuo Zhang,&nbsp;Zhendan Liu and Ye Li*,&nbsp;","doi":"10.1021/acsanm.4c0520810.1021/acsanm.4c05208","DOIUrl":"https://doi.org/10.1021/acsanm.4c05208https://doi.org/10.1021/acsanm.4c05208","url":null,"abstract":"<p >Nanoparticles (NPs) have been widely used in biomedical applications such as gene/drug delivery carriers, molecular imaging, and diagnostics. Among the physicochemical properties, shape and size are vital design parameters for tuning the cell uptake of NPs. However, the regulatory mechanism remains elusive due to the complexity of the cell membrane and the role of cytoskeletons. Therefore, in this work, a computational simulation technique is applied to investigate the influence of different dimensional skeleton proteins on the endocytosis of different-shaped NPs (sphere, rod, and disk). Our simulation results show that different dimensions of cytoskeletons can mediate selective endocytosis for different sizes and shapes of NPs. It was found that one-dimensional skeleton proteins could not help small NPs overcome membrane bending and endocytosis. We found a very interesting phenomenon. When the one-dimensional cytoskeleton limits the sinking of shape anisotropic NPs from one dimension, the NPs can respond intelligently by rotating themselves and adjusting their way to endocytosis. Two-dimensional skeleton proteins inhibited the endocytosis of NPs by restricting plasma membrane flow in both directions, while three-dimensional skeleton proteins significantly promoted the endocytosis of small NPs with different shapes. Understanding the role of different dimensions of skeleton proteins in NP endocytosis will be helpful for the design of highly efficient nanomaterials as drug/gene delivery carriers.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27185–27196 27185–27196"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843471","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
Magnetic-Field-Assisted Synthesis of Cobalt Nanowire Aerogels: Implications for Energy Storage and Electrocatalytic Applications
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0438510.1021/acsanm.4c04385
Rosemary L. Calabro, Malina O. Hatton, Kennedy V. Munz, Alexander D. Ciampa, Timothy J. Lawton, Kelsey M. Healy, Peter H. Chapman, Enoch A. Nagelli, Stephen F. Bartolucci, Joshua A. Maurer and F. John Burpo*, 
{"title":"Magnetic-Field-Assisted Synthesis of Cobalt Nanowire Aerogels: Implications for Energy Storage and Electrocatalytic Applications","authors":"Rosemary L. Calabro,&nbsp;Malina O. Hatton,&nbsp;Kennedy V. Munz,&nbsp;Alexander D. Ciampa,&nbsp;Timothy J. Lawton,&nbsp;Kelsey M. Healy,&nbsp;Peter H. Chapman,&nbsp;Enoch A. Nagelli,&nbsp;Stephen F. Bartolucci,&nbsp;Joshua A. Maurer and F. John Burpo*,&nbsp;","doi":"10.1021/acsanm.4c0438510.1021/acsanm.4c04385","DOIUrl":"https://doi.org/10.1021/acsanm.4c04385https://doi.org/10.1021/acsanm.4c04385","url":null,"abstract":"<p >Cobalt aerogels present solutions to challenges in energy, sensing, and catalysis, but their syntheses have limitations including aggregation, required templates, and slow reactant diffusion times. We demonstrate a magnetic-field-assisted synthesis as a simple, fast, and scalable strategy to produce cobalt nanowire (CoNW) aerogels with tunable nanostructure, material phase, magneto-responsiveness, and accessible surface area for electrocatalytic applications. Varying the magnetic field revealed that higher applied fields favor longer, higher aspect ratio CoNWs. Thermal annealing allowed conversion of the CoNWs to Co<sub>3</sub>O<sub>4</sub>. Finally, the applied field strength and annealing parameters influenced the aerogel surface areas, pore volumes, magnetizations, coercivities, and specific capacitances.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26601–26609 26601–26609"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c04385","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843473","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
MXene Nanosheet/Aramid Nanofiber Sandwich Films for Fire Warning Applications
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0545610.1021/acsanm.4c05456
Zijian Chen, Dingding Wang, Yingying An, Zhikun Jiang, Ting Li, Siqi Wang, Heng Zhang, Wei Yang, Hongdian Lu* and Chunxiang Wei*, 
{"title":"MXene Nanosheet/Aramid Nanofiber Sandwich Films for Fire Warning Applications","authors":"Zijian Chen,&nbsp;Dingding Wang,&nbsp;Yingying An,&nbsp;Zhikun Jiang,&nbsp;Ting Li,&nbsp;Siqi Wang,&nbsp;Heng Zhang,&nbsp;Wei Yang,&nbsp;Hongdian Lu* and Chunxiang Wei*,&nbsp;","doi":"10.1021/acsanm.4c0545610.1021/acsanm.4c05456","DOIUrl":"https://doi.org/10.1021/acsanm.4c05456https://doi.org/10.1021/acsanm.4c05456","url":null,"abstract":"<p >Early fire alarm sensors play a critical role in preventing potential fire accidents. However, most current fire alarm materials are limited by their high activation temperature and low sensitivity. In this study, a flexible sandwich-like film (AMA) was developed using vacuum-assisted self-assembly and hot-pressing technology with aramid nanofibers (ANF) and MXene. This film exhibits ultrahigh sensitivity to both low temperatures and flames and has long-lasting fire warning capabilities with a rapid response time (400 ms) and a continuous alarm signal (∼900 s) under the attack of flame. Compared to existing technologies, the AMA film offers significantly enhanced flexibility, superior thermal stability, and broader temperature sensitivity. These advancements address the limitations of narrow temperature monitoring ranges and slow response times in traditional fire alarm materials, positioning the AMA film as a promising candidate for next-generation fire safety applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27456–27464 27456–27464"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850649","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
Plasma-Enhanced Interfacial Electric Field for High-Performance MoS2/p-Si Photovoltaic Photodetectors
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0542610.1021/acsanm.4c05426
Wanyu Wang, Kaixi Shi*, Jinhua Li*, Xueying Chu and Xuan Fang, 
{"title":"Plasma-Enhanced Interfacial Electric Field for High-Performance MoS2/p-Si Photovoltaic Photodetectors","authors":"Wanyu Wang,&nbsp;Kaixi Shi*,&nbsp;Jinhua Li*,&nbsp;Xueying Chu and Xuan Fang,&nbsp;","doi":"10.1021/acsanm.4c0542610.1021/acsanm.4c05426","DOIUrl":"https://doi.org/10.1021/acsanm.4c05426https://doi.org/10.1021/acsanm.4c05426","url":null,"abstract":"<p >Localized surface plasmon resonance (LSPR) has the characteristics of a local electromagnetic field enhancement, which is extremely important in developing miniaturized high-performance photodetectors (PDs). However, most LSPR effects are used to improve the light absorption of PDs, while the incidental problem of slow response speed is often ignored. Here, we designed to construct a strong built-in electric field (BEF) within the heterojunction to solve this problem. This work demonstrates an Au@MoS<sub>2</sub>/<i>p</i>-Si photovoltaic PD with both high responsivity and fast response speed. Noticeably, Au nanoparticles (Au NPs) integrated on the MoS<sub>2</sub> surface can induce LSPR to pass through monolayer MoS<sub>2</sub> (1L-MoS<sub>2</sub>) to enhance the interfacial BEF of MoS<sub>2</sub>/<i>p</i>-Si, as confirmed by finite-difference time-domain simulations. Our device demonstrates simultaneous improvements in both photoresponse and response speed without sacrificing the interface quality. The photovoltaic PD exhibits excellent performance with a responsivity of 1498 mA/W, a detectivity of 1.96 × 10<sup>12</sup> Jones, and an ultrafast response time of 3 μs, respectively. This work realizes the possibility of LSPR to enhance the interfacial BEF of heterojunctions and extends its application field to high-performance plasmonic PDs.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27447–27455 27447–27455"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843414","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
2D MoS2 Nanosheets-PANI Derived Nanojunctions for Highly Responsive and Energy-Efficient Metal–Semiconductor–Metal Photodetectors
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0317810.1021/acsanm.4c03178
Anshika Singh*,  and , Pratima Chauhan, 
{"title":"2D MoS2 Nanosheets-PANI Derived Nanojunctions for Highly Responsive and Energy-Efficient Metal–Semiconductor–Metal Photodetectors","authors":"Anshika Singh*,&nbsp; and ,&nbsp;Pratima Chauhan,&nbsp;","doi":"10.1021/acsanm.4c0317810.1021/acsanm.4c03178","DOIUrl":"https://doi.org/10.1021/acsanm.4c03178https://doi.org/10.1021/acsanm.4c03178","url":null,"abstract":"<p >The exceptional properties of two-dimensional (2D) materials have contributed to significant advancements in optoelectronics (OPs). While various effective methods exist for enhancing photodetector (PD) responsivity, the constrained spectral range persists as a limiting factor of the device. This study demonstrates the ability to create a p-n heterojunction between 2D molybdenum disulfide (MoS<sub>2</sub>) nanosheets and polyaniline (PANI) for metal–semiconductor–metal (MSM) PDs using a solution-processed approach on PET substrate. We evaluated the MoS<sub>2</sub>-PANI nanohybrid PD device across the visible and ultraviolet (UV) spectra. When exposed to UV and visible light irradiation, the estimated maximum responsivities of the fabricated PD are 29.98 AW<sup>–1</sup> and 73.32 AW<sup>–1</sup>, respectively. This is significant when compared with the earlier research on broadband PDs. We create a pathway for developing highly responsive broadband PDs by integrating organic and inorganic materials. These innovations hold promise for various applications in security, healthcare, and beyond.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26686–26697 26686–26697"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843392","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
In Situ Scanning Electron Microscopy Crack Characterization and Resistance Evolution in Cyclically-Strained Ag Nanoflake-Based Inks
IF 5.3 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-11-25 DOI: 10.1021/acsanm.4c0513310.1021/acsanm.4c05133
Qiushi Li, Antonia Antoniou* and Olivier N. Pierron*, 
{"title":"In Situ Scanning Electron Microscopy Crack Characterization and Resistance Evolution in Cyclically-Strained Ag Nanoflake-Based Inks","authors":"Qiushi Li,&nbsp;Antonia Antoniou* and Olivier N. Pierron*,&nbsp;","doi":"10.1021/acsanm.4c0513310.1021/acsanm.4c05133","DOIUrl":"https://doi.org/10.1021/acsanm.4c05133https://doi.org/10.1021/acsanm.4c05133","url":null,"abstract":"<p >The reliability of nanocomposite conductive inks under cyclic loading is the key to designing robust flexible electronics. Although resistance increases with cycling and models exist, the exact degradation mechanism is not well understood and is critical for developing inks. This study links cracking behavior to changes in electrical resistance by performing in situ cyclic stretch experiments in scanning electron microscopy (SEM) with synchronized resistance measurements. Two screen-printed conductive inks, PE874 and 5025, on thermoplastic polyurethane (TPU) and polyimide (PI) substrates, respectively, were tested using the in situ technique. The obtained SEM images were analyzed with digital image correlation (DIC) to map the strain across cycles. The strain maps show that fatigue damage mainly occurred within the cracks formed during the initial monotonic stretch. There was no delamination at the ink–substrate interface or crack extension along the surface with cycling. Instead, fatigue damage resulted from a combination of crack widening and local shearing within the existing cracks. Crack depth varied based on the ink and substrate properties. The cracks in the 5025 ink on the PI substrate were only partially through the ink thickness, while fully through-thickness cracks were more prevalent in the PE874 ink on the TPU substrate. The 5025 ink showed a faster resistance increase with cycling than the PE874 ink because fatigue damage affected more bridging ink material for partial through-thickness cracks. Higher strain amplitudes caused greater crack widening and shearing and therefore faster resistance increase per cycle.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27173–27184 27173–27184"},"PeriodicalIF":5.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c05133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843470","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
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