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IF 22.7 1区 材料科学
Infomat Pub Date : 2024-11-21 DOI: 10.1002/inf2.12647
Guoyi Li, Shenghong Li, Jahangeer Ahmed, Wei Tian, Liang Li
{"title":"Back cover image","authors":"Guoyi Li,&nbsp;Shenghong Li,&nbsp;Jahangeer Ahmed,&nbsp;Wei Tian,&nbsp;Liang Li","doi":"10.1002/inf2.12647","DOIUrl":"https://doi.org/10.1002/inf2.12647","url":null,"abstract":"<p>A flexible perovskite photodetector with room-temperature self-healing function without external trigger is developed. A crosslinked polyurethane network is filled to the grain boundary of perovskite film, which not only improves the crystal quality of perovskite and mechanical stability but also enables flexible perovskite photodetectors to self-heal at room temperature.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"6 11","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12647","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Super-adaptive electroactive programmable adhesive materials to challenging surfaces: From intelligent soft robotics to XR haptic interfaces
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-11-17 DOI: 10.1002/inf2.12640
Seung Hwan Jeon, Gui Won Hwang, Jinhyung Kim, Dohyun Lim, Yong Son, Tae-Heon Yang, Da Wan Kim, Changhyun Pang
{"title":"Super-adaptive electroactive programmable adhesive materials to challenging surfaces: From intelligent soft robotics to XR haptic interfaces","authors":"Seung Hwan Jeon,&nbsp;Gui Won Hwang,&nbsp;Jinhyung Kim,&nbsp;Dohyun Lim,&nbsp;Yong Son,&nbsp;Tae-Heon Yang,&nbsp;Da Wan Kim,&nbsp;Changhyun Pang","doi":"10.1002/inf2.12640","DOIUrl":"https://doi.org/10.1002/inf2.12640","url":null,"abstract":"<p>Recently, the intelligent strategies for adapting to multiple challengeable surfaces of electroactive programmable materials integrated with bio-inspired architectures offer expanded directions beyond traditional limitations in soft grippers, medical mobile robots, and XR (Extended Reality) interfaces. These electroactive programmable adhesive materials are adaptively designed for a variety of complex surfaces, including soft, wet, non-flat, or contamination-susceptible feature such as bio-surfaces and vulnerable objects. They can be produced via solution-based methods of replica coating or 3/4-dimensional printing. The integration of electroactive programmable materials and intelligent adhesive architecture enables super-adaptive switchable adhesion to a variety of complex surfaces through control of physical deformation and mechanical properties at the adhesive interface, presenting a breakthrough in soft electro-robotics and extended reality (XR) Haptic interfaces technology. These surface-adaptive platform can provide multiple functionalities that can efficiently control physical deformations of soft bioinspired architectures or transfer physical energy (heat, vibration, pressure) into the engaged surfaces in a lightweight and human-friendly form. This review focuses on intelligent strategies, principles, design, and fabrication methods of super-adaptive electroactive programmable materials intelligently combined with bioinspired switchable adhesives for next-generation human–robot interaction devices, along with current challenges and prospects.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 2","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
In situ formation of pseudohalide anions induced by humid air and light passivates formamidinium-based halide perovskites
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-11-14 DOI: 10.1002/inf2.12643
Jiselle Y. Ye, Ross A. Kerner, Qi Jiang, Fengjiu Yang, Jonghee Yang, Mahshid Ahmadi, Steven P. Harvey, Kenneth X. Steirer, Darius Kuciauskas, Joseph J. Berry, Kai Zhu
{"title":"In situ formation of pseudohalide anions induced by humid air and light passivates formamidinium-based halide perovskites","authors":"Jiselle Y. Ye,&nbsp;Ross A. Kerner,&nbsp;Qi Jiang,&nbsp;Fengjiu Yang,&nbsp;Jonghee Yang,&nbsp;Mahshid Ahmadi,&nbsp;Steven P. Harvey,&nbsp;Kenneth X. Steirer,&nbsp;Darius Kuciauskas,&nbsp;Joseph J. Berry,&nbsp;Kai Zhu","doi":"10.1002/inf2.12643","DOIUrl":"https://doi.org/10.1002/inf2.12643","url":null,"abstract":"<p>Metal halide perovskites based on formamidinium (FA), or FA-rich compositions have shown great promise for high-performance photovoltaics. A deeper understanding of the impact of ambient conditions (e.g., moisture, oxygen, and illumination) on the possible reactions of FA-based perovskite films and their processing sensitivities has become critical for further advances toward commercialization. Herein, we investigate reactions that take place on the surface of the FA<sub>0.7</sub>Cs<sub>0.3</sub>, mixed Br/I wide bandgap perovskite thin films in the presence of humid air and ambient illumination. The treatment forms a surface layer containing O, OH, and N-based anions. We propose the latter originates from formamidine trapped at the perovskite/oxide interface reacting further to cyanide and/or formamidinate—an understudied class of pseudohalides that bind to Pb. Optimized treatment conditions improve photoluminescence quantum yield owing to both reduced surface recombination velocity and increased bulk carrier lifetime. The corresponding perovskite solar cells also exhibit improved performance. Identifying these reactions opens possibilities for better utilizing cyanide and amidinate ligands, species that may be expected during vapor processing of FA-based perovskites. Our work also provides new insights into the self-healing or self-passivating of MA-free perovskite compositions where FA and iodide damage could be partially offset by advantageous reaction byproducts.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 2","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12643","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Fueling the future of clean energy with self-supported layered double hydroxides-based electrocatalysts: A step toward sustainability
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-11-05 DOI: 10.1002/inf2.12639
Man-Kei Wong, Jian Yiing Loh, Feng Ming Yap, Wee-Jun Ong
{"title":"Fueling the future of clean energy with self-supported layered double hydroxides-based electrocatalysts: A step toward sustainability","authors":"Man-Kei Wong,&nbsp;Jian Yiing Loh,&nbsp;Feng Ming Yap,&nbsp;Wee-Jun Ong","doi":"10.1002/inf2.12639","DOIUrl":"https://doi.org/10.1002/inf2.12639","url":null,"abstract":"<p>Amid the ongoing transition toward renewable fuels, the self-supported layered double hydroxides (LDHs) are envisioned as propitious electrocatalysts for reinvigorating the electrocatalysis realm, thereby facilitating environmental remediation and bolstering sustainable global energy security. Exploiting appealing attributes such as unique lamellar structure, abundant active sites, tunable intercalation spacing and compositional flexibility, LDHs boast remarkable activity, selectivity and stability across diverse energy-related applications. By virtue of addressing the technological and time prominence of excavating their renaissance, this review first encompasses the facile state-of-the-art synthetic approaches alongside intriguing modification strategies, toward deciphering the authentic structure–performance correlations for advancing more robust and precise catalyst design. Aside from this, heterostructure engineering employing diversified ranges of coupling materials is highlighted, to construct ground-breaking binder-free LDHs-based heterostructures endowing with unprecedented activity and stability. Subsequently, the milestone gained from experimental research and theoretical modeling of this frontier in multifarious electrocatalytic applications, including HER, OER, UOR, AOR, seawater splitting and other fundamental conversion reactions is rigorously unveiled. As a final note, a brief conclusion is presented with an outline of future prospects. Essentially, this review aspires to offer enlightenment and incite wise inspiration for the future evolution of innovative and resilient next-generation catalysts.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 2","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12639","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Hierarchical structure Fe@CNFs@Co/C elastic aerogels with intelligent electromagnetic wave absorption
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-26 DOI: 10.1002/inf2.12630
Hongwei Zhou, Ying Lin, Yongzhen Ma, Luyao Han, Zhixin Cai, Yan Cheng, Qibin Yuan, Wenhuan Huang, Haibo Yang, Renchao Che
{"title":"Hierarchical structure Fe@CNFs@Co/C elastic aerogels with intelligent electromagnetic wave absorption","authors":"Hongwei Zhou,&nbsp;Ying Lin,&nbsp;Yongzhen Ma,&nbsp;Luyao Han,&nbsp;Zhixin Cai,&nbsp;Yan Cheng,&nbsp;Qibin Yuan,&nbsp;Wenhuan Huang,&nbsp;Haibo Yang,&nbsp;Renchao Che","doi":"10.1002/inf2.12630","DOIUrl":"https://doi.org/10.1002/inf2.12630","url":null,"abstract":"<p>Developing intelligent electromagnetic wave (EMW) absorption materials with real-time response-ability is of great significance in complex application environments. Herein, highly compressible Fe@CNFs@Co/C elastic aerogels were assembled through the electrospinning method, achieving EMW absorption through pressure changes. By varying the pressure, the effective absorption bandwidth (EAB) of Fe@CNFs@Co/C elastic aerogels shows continuous changes from low frequency to high frequency. The EAB of Fe@CNFs@Co/C elastic aerogels is 14.4 GHz (3.36–17.76 GHz), which covers 90% of the range of S/C/X/Ku bands. The theoretical simulation indicates that the external pressure prompts a reduction in the spacing between the fiber layers in the aerogels and facilitates the formation of a 3D conductive network with enhanced attenuation ability of EMW. The uniform distribution of metal particles and appropriate layer spacing can effectively optimize the impedance matching to achieve the best EMW absorption performance. This work state clearly that the hierarchically assembled elastic aerogels composed of metal–organic frameworks (MOFs) derivatives and carbon fibers are ideal dynamic EMW absorption materials for intelligent EMW response.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 1","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12630","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Transferable, highly crystalline covellite membrane for multifunctional thermoelectric systems 用于多功能热电系统的可转移高结晶沸石膜
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-16 DOI: 10.1002/inf2.12626
Myungwoo Choi, Geonhee Lee, Yea-Lee Lee, Hyejeong Lee, Jin-Hoon Yang, Hanhwi Jang, Hyeonseok Han, MinSoung Kang, Seonggwang Yoo, A-Rang Jang, Yong Suk Oh, Inkyu Park, Min-Wook Oh, Hosun Shin, Seokwoo Jeon, Jeong-O Lee, Donghwi Cho
{"title":"Transferable, highly crystalline covellite membrane for multifunctional thermoelectric systems","authors":"Myungwoo Choi,&nbsp;Geonhee Lee,&nbsp;Yea-Lee Lee,&nbsp;Hyejeong Lee,&nbsp;Jin-Hoon Yang,&nbsp;Hanhwi Jang,&nbsp;Hyeonseok Han,&nbsp;MinSoung Kang,&nbsp;Seonggwang Yoo,&nbsp;A-Rang Jang,&nbsp;Yong Suk Oh,&nbsp;Inkyu Park,&nbsp;Min-Wook Oh,&nbsp;Hosun Shin,&nbsp;Seokwoo Jeon,&nbsp;Jeong-O Lee,&nbsp;Donghwi Cho","doi":"10.1002/inf2.12626","DOIUrl":"https://doi.org/10.1002/inf2.12626","url":null,"abstract":"<p>Emerging freestanding membrane technologies, especially using inorganic thermoelectric materials, demonstrate the potential for advanced thermoelectric platforms. However, using rare and toxic elements during material processing must be circumvented. Herein, we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications. By sulfurizing crystalline Cu, we produce a highly percolated and easily transferable network of submicron CuS rods. The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m<sup>−1</sup> K<sup>−2</sup> and thermal conductivity of 0.37 W m<sup>−1</sup> K<sup>−1</sup> at 650 K (estimated value). This yields a record-high dimensionless figure-of-merit of 0.91 at 650 K (estimated value) for covellite. Moreover, integrating 12 CuS devices into a module resulted in a power generation of ~4 μW at Δ<i>T</i> of 40 K despite using a straightforward configuration with only p-type CuS. Furthermore, based on the temperature-dependent electrical characteristics of CuS, we develop a wearable temperature sensor with antibacterial properties.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"6 11","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12626","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Self-healing polymers in rigid and flexible perovskite photovoltaics
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-15 DOI: 10.1002/inf2.12628
Fang-Cheng Liang, Erdi Akman, Sikandar Aftab, Mustafa K. A. Mohammed, H. H. Hegazy, Xiujuan Zhang, Fei Zhang
{"title":"Self-healing polymers in rigid and flexible perovskite photovoltaics","authors":"Fang-Cheng Liang,&nbsp;Erdi Akman,&nbsp;Sikandar Aftab,&nbsp;Mustafa K. A. Mohammed,&nbsp;H. H. Hegazy,&nbsp;Xiujuan Zhang,&nbsp;Fei Zhang","doi":"10.1002/inf2.12628","DOIUrl":"https://doi.org/10.1002/inf2.12628","url":null,"abstract":"<p>Over the past 10 years, perovskite solar cell (PSC) device technologies have advanced remarkably and exhibited a notable increase in efficiency. Additionally, significant innovation approaches have improved the stability related to heat, light, and moisture of PSC devices. Despite these developments in PSCs, the instability of PSCs is a pressing problem and an urgent matter to overcome for practical application. Recently, polymers have been suggested suggestion has been presented to solve the instability issues of PSCs and increase the photovoltaic parameters of devices. Here, first, the fundamental chemical bond types of self-healing polymers are presented. Then, a comprehensive presentation of the ability of self-healing polymers in rigid and flexible PSCs to enhance the various physical, mechanical, and optoelectronic properties is presented. Furthermore, valuable insights and innovative solutions for perovskite-based optoelectronics with self-healing polymers are provided, offering guidance for future optoelectronic applications.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 1","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12628","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Submerged and completely open solid–liquid triboelectric nanogenerator for water wave energy harvesting
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-14 DOI: 10.1002/inf2.12621
Youbo Nan, Xiutong Wang, Hui Xu, Hui Zhou, Yanan Sun, Mingxing Wang, Weilong Liu, Chaoqun Ma, Teng Yu
{"title":"Submerged and completely open solid–liquid triboelectric nanogenerator for water wave energy harvesting","authors":"Youbo Nan,&nbsp;Xiutong Wang,&nbsp;Hui Xu,&nbsp;Hui Zhou,&nbsp;Yanan Sun,&nbsp;Mingxing Wang,&nbsp;Weilong Liu,&nbsp;Chaoqun Ma,&nbsp;Teng Yu","doi":"10.1002/inf2.12621","DOIUrl":"https://doi.org/10.1002/inf2.12621","url":null,"abstract":"<p>Triboelectric nanogenerator (TENG) is an emerging wave energy harvesting technology with excellent potential. However, due to issues with sealing, anchoring, and difficult deployment over large areas, TENG still cannot achieve large-scale wave energy capture. Here, a submerged and completely open solid–liquid TENG (SOSL-TENG) is developed for ocean wave energy harvesting. The SOSL-TENG is adapted to various water environments. Due to its simple structure, it is easy to deploy into various marine engineering facilities in service. Importantly, this not only solves the problem of difficult construction of TENG networks at present, but also effectively utilizes high-quality wave energy resources. The working mechanism and output performance of the SOSL-TENG are systematically investigated. With optimal triggering conditions, the transferred charge (<i>Q</i><sub>tr</sub>) and short-circuit current (<i>I</i><sub>sc</sub>) of SOSL-TENG are 2.58 μC and 85.9 μA, respectively. The wave tank experiment is taken for fully demonstrating the superiority of the SOSL-TENG network in large-scale collection and conversion of wave energy. Due to the excellent output performance, TENG can harvest wave energy to provide power for various commercial electronic devices such as LED beads, hygrothermograph, and warning lights. Importantly, the SOSL-TENG networks realizes self-powered for electrochemical systems, which provides a direction for energy cleanliness in industrial systems. This work provides a prospective strategy for large-scale deployment of TENG applications, especially for harvesting wave energy in spray splash zones or at the surface of the water.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 3","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12621","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Substance discrimination imaging derived from switchable soft and hard x-ray sensing in direct x-ray detector
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-13 DOI: 10.1002/inf2.12632
Jingda Zhao, Xin Wang, Yuwei Li, Qi Cheng, Damian Chinedu Onwudiwe, Byung Seong Bae, Mehmet Ertuğrul, Ying Zhu, Wei Lei, Xiaobao Xu
{"title":"Substance discrimination imaging derived from switchable soft and hard x-ray sensing in direct x-ray detector","authors":"Jingda Zhao,&nbsp;Xin Wang,&nbsp;Yuwei Li,&nbsp;Qi Cheng,&nbsp;Damian Chinedu Onwudiwe,&nbsp;Byung Seong Bae,&nbsp;Mehmet Ertuğrul,&nbsp;Ying Zhu,&nbsp;Wei Lei,&nbsp;Xiaobao Xu","doi":"10.1002/inf2.12632","DOIUrl":"https://doi.org/10.1002/inf2.12632","url":null,"abstract":"<p>Substance discrimination beyond the shape feature is urgently desired for x-ray imaging for enhancing target identification. With two x-ray sources or stacked two detectors, the two-energy-channel x-ray detection can discriminate substance density by normalizing the target thickness. Nevertheless, the artifacts, high radiation dose and difficulty in image alignment due to two sources or two detectors impede their widespread application. In this work, we report a single direct x-ray detector with MAPbI<sub>3</sub>/MAPbBr<sub>3</sub> heterojunction for switchable soft x-ray (&lt;20 keV) and hard x-ray (&gt;20 keV) detection under one x-ray source. Systematic characterizations confirm soft and hard x-ray deposit their energy in MAPbI<sub>3</sub> and MAPbBr<sub>3</sub> layer, respectively, while working voltages can control the collection of generated charge carriers in each layer for selective soft/hard x-ray detection. The switching rate between soft and hard x-ray detection mode reaches 100 Hz. Moreover, the detector possesses a moderate performance with ~50 nGy s<sup>−1</sup> in limit-of-detection, ~8000 μC Gy<sup>−1</sup> cm<sup>−2</sup> in sensitivity and ~7 lp/mm in imaging resolution. By defining the attenuation coefficient ratio (<i>𝜇</i><sub><i>L</i></sub><i>/𝜇</i><sub><i>H</i></sub>) as substance label, we effectively mitigate the influence of target thickness and successfully discriminate substances in the acquired x-ray images.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 2","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12632","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Crystallinity-controlled volatility tuning of ZrO2 memristor for physical reservoir computing
IF 22.7 1区 材料科学
Infomat Pub Date : 2024-10-11 DOI: 10.1002/inf2.12635
Dae Kyu Lee, Gichang Noh, Seungmin Oh, Yooyeon Jo, Eunpyo Park, Min Jee Kim, Dong Yeon Woo, Heerak Wi, YeonJoo Jeong, Hyun Jae Jang, Sangbum Kim, Suyoun Lee, Kibum Kang, Joon Young Kwak
{"title":"Crystallinity-controlled volatility tuning of ZrO2 memristor for physical reservoir computing","authors":"Dae Kyu Lee,&nbsp;Gichang Noh,&nbsp;Seungmin Oh,&nbsp;Yooyeon Jo,&nbsp;Eunpyo Park,&nbsp;Min Jee Kim,&nbsp;Dong Yeon Woo,&nbsp;Heerak Wi,&nbsp;YeonJoo Jeong,&nbsp;Hyun Jae Jang,&nbsp;Sangbum Kim,&nbsp;Suyoun Lee,&nbsp;Kibum Kang,&nbsp;Joon Young Kwak","doi":"10.1002/inf2.12635","DOIUrl":"https://doi.org/10.1002/inf2.12635","url":null,"abstract":"<p>Memristors have been emerging as promising candidates for computing systems in post-Moore applications, particularly electrochemical metallization-based memristors, which are poised to play a crucial role in neuromorphic computing and machine learning. These devices are favored for their high integration density, low power consumption, rapid switching speed, and significant on/off ratio. Despite advancements in various materials, achieving adequate electrical performance—characterized by threshold switching (TS) behavior, spontaneous reset, and low off-state resistance—remains challenging due to the limitations in conductance filament control within the nanoscale resistive switching layer. In this study, we introduce an efficient method to control the ZrO<sub>2</sub> crystallinity for tunable volatility memristor by establishing the filament paths through a simple thermal treatment process in a single oxide layer. The effect of ZrO<sub>2</sub> crystallinity to create localized filament paths for enhancing Ag migration and improving TS behavior is also investigated. In contrast to its amorphous counterpart, crystallized ZrO<sub>2</sub> volatile memristor, treated by rapid thermal annealing, demonstrates a steep switching slope (0.21 mV dec<sup>–1</sup>), a high resistance state (25 GΩ), and forming-free characteristics. The superior volatile performance is attributed to localized conductive filaments along low-energy pathways, such as dislocations and grain boundaries. By coupling with enhanced volatile switching behavior, we believe that the volatility is finely tuned to function as short-term memory for reservoir computing, making it particularly well-suited for tasks such as audio and image recognition.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":48538,"journal":{"name":"Infomat","volume":"7 2","pages":""},"PeriodicalIF":22.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/inf2.12635","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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