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Finding the optical properties of plasmonic structures by image processing using a combination of convolutional neural networks and recurrent neural networks

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Microsystems & Nanoengineering 2019年第1期5卷 398-405页

作者： Iman Sajedian jeonghyun kim Junsuk Rho Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

Image processing can be used to extract meaningful optical results from ***,from images of plasmonic structures,we combined convolutional neural networks with recurrent neural networks to extract the absorption spectra of *** provide the data required for the model,we performed 100,000 simulations with similar setups and random *** designing this deep network,we created a model that can predict the absorption response of any structure with a similar *** used convolutional neural networks to collect spatial information from the images,and then,we used that data and recurrent neural networks to teach the model to predict the relationship between the spatial information and the absorption *** results show that this image processing method is accurate and can be used to replace time-and computationally-intensive numerical *** trained model can predict the optical results in less than a second without the need for a strong computing *** technique can be easily extended to cover different structures and extract any other optical properties.

关键词： optical networks neural

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N:ZnO/MoS_(2)-heterostructured flexible synaptic devices enabling optoelectronic co-modulation for robust artificial visual systems

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Nano Research 2024年第3期17卷 1902-1912页

作者： Lei Xu Wenxiao Wang Yang Li Yonghui Lin Wenjing Yue Kai Qian Qinglei Guo jeonghyun kim Guozhen Shen School of Information Science and Engineering University of JinanJinan 250022China School of Microelectronics Shandong UniversityJinan 250101China Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897Republic of Korea School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China

With the merits of non-contact,highly efficient,and parallel computing,optoelectronic synaptic devices combining sensing and memory in a single unit are promising for constructing neuromorphic computing and artificial visual *** on this,a N:ZnO/MoS_(2)-heterostructured flexible optoelectronic synaptic device is developed in this work,and its capability in mimicking the synaptic behaviors is systemically investigated under the electrical and light *** synaptic functions,including synaptic plasticity,long-term/short-term memory,and learning-forgetting-relearning property,have been achieved in this synaptic ***,an artificial visual memory system integrating sense and memory is emulated with the device array,and the visual memory behavior can be regulated by varying the light ***,the optoelectronic co-modulation behavior is verified by applying mixed electric and light signals to the *** detail,a transient recovery property is discovered when the electric signals are applied in synergy during the decay of the light response,of which property facilitates the development of robust artificial visual ***,by superimposing electrical signals during the light response process,a differentiated response of the array is achieved,which can be used as a proof of concept for the color perception of the artificial visual system.

关键词： flexible synaptic device synaptic plasticity optoelectronic synapse robust visual memory optoelectronic co-modulation artificial visual system

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Wireless,multimodal sensors for continuous measurement of pressure,temperature,and hydration of patients in wheelchair

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npj Flexible Electronics 2023年第1期7卷 479-493页

作者： Seokjoo Cho Hyeonseok Han Hyunwoo Park Sung-Uk Lee Jae-Hwan kim Sung Woo Jeon Mengqiu Wang Raudel Avila Zhaoqian Xi Kabseok Ko Minsu Park Jungyup Lee Myungwoo Choi Je-Sang Lee Weon Gi Min Byeong-Ju Lee Soyeong Lee Jungrak Choi Jimin Gu Jaeho Park Min Seong kim Junseong Ahn Osman Gul Chankyu Han Gihun Lee Seunghwan kim Kyuyoung kim jeonghyun kim Chang-Mo Kang Jahyun Koo Sung Soo Kwak Sungbong kim Dong Yun Choi Seokwoo Jeon Hyung Jin Sung Yong Bae Park Minkyu Je Young Tae Cho Yong Suk Oh Inkyu Park Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Advanced 3D Printing Technology Development Division Korea Atomic Energy Research InstituteDaejeon 34057Republic of Korea Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian 116023P.R.China Department of Mechanical Engineering Northwestern UniversityEvanstonIL 60208USA DUT-BSU Joint Institute Dalian University of TechnologyDalian 116023China Ningbo Institute of Dalian University of Technology Ningbo 315016China Department of Electronics Engineering Kangwon National UniversityChuncheon 24341Republic of Korea Querrey-Simpson Institute for Bioelectronics Northwestern UniversityEvanstonIL 60208USA Sibel Health Inc NilesIL 60714USA Department of Materials Science and Engineering KAIST Institute for The Nanocentury(KINC)Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Rehabilitation Medicine Gimhae Hansol Rehabilitation&Convalescent HospitalGimhae 50924Republic of Korea Department of planning and development Gimhae Hansol Rehabilitation&Convalescent HospitalGimhae 50924Republic of Korea Department of rehabilitation medicine Pusan national university hospitalBusan 49241Republic of Korea Department of AI Convergence Network Ajou UniversitySuwon 16499Republic of Korea Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897Republic of Korea Korea Photonics Technology Institute Gwangju 61007Republic of Korea School of Biomedical Engineering Korea UniversitySeoul 02841Republic of Korea Interdisciplinary Program in Precision Public Health Korea UniversitySeoul 02841Republic of Korea Center

Individuals who are unable to walk independently spend most of the day in a *** population is at high risk for developing pressure injuries caused by ***,early diagnosis and prevention of these injuries still remain ***,we introduce battery-free,wireless,multimodal sensors and a movable system for continuous measurement of pressure,temperature,and hydration at skin *** device design includes a crack-activated pressure sensor with nanoscale encapsulations for enhanced sensitivity,a temperature sensor for measuring skin temperature,and a galvanic skin response sensor for measuring skin hydration *** movable system enables power harvesting,and data communication to multiple wireless devices mounted at skin-cushion interfaces of wheelchair users over full body *** evaluations and numerical simulations of the devices,together with clinical trials for wheelchair patients,demonstrate the feasibility and stability of the sensor system for preventing pressure injuries caused by sitting.

关键词： injuries modal mounted

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无管式自净药品安全柜设计与性能

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暖通空调 2013年第5期43卷 63-66页

作者：张博张彭义王金龙金廷炫张可心清华大学

药剂挥发是造成化学、生物类实验室空气污染的主要原因之一。为控制此类实验室的空气质量,应用真空紫外线光催化-臭氧催化分解联合空气净化技术,设计开发了无管式自净药品安全柜。通过实验测定,确定了净化模块的关键参数:真空紫外线光... 详细信息

药剂挥发是造成化学、生物类实验室空气污染的主要原因之一。为控制此类实验室的空气质量,应用真空紫外线光催化-臭氧催化分解联合空气净化技术,设计开发了无管式自净药品安全柜。通过实验测定,确定了净化模块的关键参数:真空紫外线光催化单元气流的停留时间为30s,臭氧催化分解单元催化剂的床层厚度为3cm。测试结果表明,样机的净化效果能满足标准要求。

关键词：无管式自净药品柜真空紫外光催化臭氧催化分解设计性能

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Oxygen vacancy engineering for tuning the catalytic activity of LaCoO_(3) perovskite

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Journal of Rare Earths 2024年第3期42卷 506-514,I0003页

作者： Jeong Hyun Cho Minjae kim Inchan Yang Kyung Tae Park Chang Houn Rhee Hai Woong Park Ji Chul Jung Department of Chemical Engineering Myongji UniversityYongin 17058Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and TechnologyWanju-gunJeollabuk-do 55324Republic of Korea Iron&Steel Process Engineering Research Group POSCOPohang 37859Republic of Korea Hydrogen Research Center Research Institute of Industrial Science&Technology(RIST)Pohang 37673Republic of Korea

Herein, we attempted to engineer oxygen vacancies on the surface of LaCoO_(3) perovskite through simple post-treatments(acid or reductive thermal treatments). Acid treatment induces oxygen vacancies through the selective etching of the La cations, whereas thermal treatment in a reducing atmosphere generates oxygen vacancies by directly removing lattice oxygen. The characterization results confirm that the number of surface oxygen vacancies, which are crucial in various catalytic oxidation reactions,considerably increases in the LaCoO_(3) catalysts treated with acid or reducing gas. Acid treatment enriches the oxygen vacancies while maintaining the structure of the LaCoO_(3) catalysts, which can not be achieved through reductive thermal treatment. Therefore, the acid treatment is considered a promising technique for oxygen vacancy engineering of perovskite catalysts for tuning their catalytic activities. Furthermore,the catalytic activities of the posttreated LaCoO_(3) catalysts for CO oxidation were evaluated and are noted to be considerably better than those of the pristine LaCoO_(3) catalyst due to their abundant oxygen vacancies. Consequently, we conclude that the oxygen vacancies of perovskite catalysts can be effectively engineered via two simple methods and play a significant role in CO oxidation.

关键词： LaCoO_(3)perovskite Acid treatment Reductive thermal treatment Oxygen vacancy CO oxidation Rare earths

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iSchool中的数字人文

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数字人文研究 2021年第3期1卷 93-112页

作者：约翰·A.沃尔什彼得·J.科布韦恩·德·弗雷默里科拉伊卡·戈卢布基赫·汉弗莱金贞贤约瑟夫·基普朗特刘英享西蒙·马奥尼吴三均克里斯·阿伦·苏拉特德·安德伍德王晓光陈怡(译) 美国印第安纳大学勒迪学院香港大学教育学院人类通讯、发展与信息科学学术组(CDIS) 香港大学人文学院韩国西江大学媒体艺术科学院瑞典林奈大学信息研究所联合国粮食及农业组织美国北得克萨斯州大学信息学院肯尼亚莫伊大学信息科学学院挪威奥斯陆城市大学图书情报档案系北京师范大学珠海分校数字出版与数字人文研究中心韩国成均馆大学图书馆与信息科学系美国普瑞特艺术学院信息学院美国伊利诺伊大学厄巴纳-香槟分校信息科学学院武汉大学信息管理学院、数字人文研究中心中国人民大学信息资源管理学院

作为交叉领域而广为人知的数字人文,正形式多样地呈现于iSchool的教学和研究活动中.在专门负责探索数字人文课程体系的iSchools组织委员会工作的基础上,当前的发现来自于一系列探讨iSchool(经常与其他部门和学科合作)的数字人文教学、... 详细信息

作为交叉领域而广为人知的数字人文,正形式多样地呈现于iSchool的教学和研究活动中.在专门负责探索数字人文课程体系的iSchools组织委员会工作的基础上,当前的发现来自于一系列探讨iSchool(经常与其他部门和学科合作)的数字人文教学、教育和研究之各方面的相关探讨.首先基于对iSchool项目的调研和一项对数字人文课程的在线调查,考察了iSchool中丰富多样的数字人文教育模式;通过分析各课程大纲与描述,详细探究了数字人文课程设置及体系.随后简要介绍了与iSchool合作进行数字人文研究项目或提供数字人文教育的学科部门.接着,通过分析相关职位的招聘广告探讨了数字人文职业.最后,围绕开展一项新的数字人文项目,就运营和行政层面上的挑战与机遇提供了一些观察.作为结果,最终呈现的是一份关于iSchool中数字人文发展现状的概览,可为设计与发展新的数字人文项目、学位和相关举措提供有益参考.

关键词：数字人文 iSchool 教育培养课程设置合作学科职业生涯

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