检索结果-内蒙古大学图书馆

A File Sharing Site for Lens designs 23

Conference on current developments in Lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Reiley, Daniel J. Claff, William Burbank (United States) Sherborn (United States)

ISBN: (纸本)9781510654198;9781510654181

A file sharing site for lens designs has been started at *** . This site currently contains almost 2,000 optical models. Many engineering disciplines have built public libraries of useful, publicly-available content. For example, GITHUB(1) has publicly-available software;GrabCAD(2), 3DcontentCentral(3), TurboSquid(4) all offer mechanical engineering content such as solids files;TI, Analog, etc. offer reference designs for electronics engineers. Generally, these services aren't just file repositories;they also offer collaboration, yielding more models, more refinement, more discussion, more community, and more to learn. Lens designers can also benefit from such design libraries. This paper explains the utility and structure of the site.

关键词： Lens design

来源：评论

学校读者我要写书评

暂无评论

Physical stimuli-responsive DNA hydrogels: design, fabrication strategies, and biomedical applications

引用

JOURNAL OF NANOBIOTECHNOLOGY 2025年第1期23卷 233页

作者： Acharya, Rumi Dutta, Sayan Deb Mallik, Hemadri Patil, Tejal v. Ganguly, Keya Randhawa, Aayushi Kim, Hojin Lee, Jieun Park, Hyeonseo Mo, Changyeun Lim, Ki-Taek Kangwon Natl Univ Dept Biosyst Engn Chunchon 24341 South Korea Kangwon Natl Univ Interdisciplinary Program Smart Agr Chunchon 24341 South Korea Kangwon Natl Univ Inst Forest Sci Chunchon 24341 South Korea Univ Burdwan Dept Bot Bardhaman 713104 West Bengal India Virginia Tech Dept Mech Engn Blacksburg VA 24061 USA

Physical stimuli-responsive DNA hydrogels hold immense potential for tissue engineering due to their inherent biocompatibility, tunable properties, and capacity to replicate the mechanical environment of natural tissue, making physical stimuli-responsive DNA hydrogels a promising candidate for tissue engineering. These hydrogels can be tailored to respond to specific physical triggers such as temperature, light, magnetic fields, ultrasound, mechanical force, and electrical stimuli, allowing precise control over their behavior. By mimicking the extracellular matrix (ECM), DNA hydrogels provide structural support, biomechanical cues, and cell signaling essential for tissue regeneration. This article explores various physical stimuli and their incorporation into DNA hydrogels, including DNA self-assembly and hybrid DNA hydrogel methods. The aim is to demonstrate how DNA hydrogels, in conjunction with other biomolecules and the ECM environment, generate dynamic scaffolds that respond to physical stimuli to facilitate tissue regeneration. We investigate the most recent developments in cancer therapies, including injectable DNA hydrogel for bone regeneration, personalized scaffolds, and dynamic culture models for drug discovery. The study concludes by delineating the remaining obstacles and potential future orientations in the optimization of DNA hydrogel design for the regeneration and reconstruction of tissue. It also addresses strategies for surmounting current challenges and incorporating more sophisticated technologies, thereby facilitating the clinical translation of these innovative hydrogels.

关键词： Physical stimuli DNA hydrogel Extracellular matrix Biomechanical cues Tissue regeneration

来源：评论

学校读者我要写书评

暂无评论

Changing field of view by applying voltage difference 23

Changing field of view by applying voltage difference

引用

Conference on current developments in Lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Sakarya, Dogan Ugur Roketsan Tact Missile Syst Grp TR-06780 Ankara Turkey

ISBN: (纸本)9781510654198;9781510654181

Dual field of view optical systems provide search, detect and observation abilities with wide and narrow field of views. These systems provide dual field of view by changing the effective focal length with moving a lens or lens group mechanically to exact positions. In this paper, previously proposed methodology is used to change effective focal length without any mechanical movement. This methodology relies on ionization of fluid with voltage difference to change the refractive index which is patented in 2022.

关键词： Observation system field of view zoom lens design voltage difference solution ionization

来源：评论

学校读者我要写书评

暂无评论

Flexible Transparent Electrochemical Energy Conversion and Storage: From Electrode Structures to Integrated Applications

引用

Energy & Environmental Materials 2023年第1期6卷 43-71页

作者： Yanli Zhao Huaizhi Liu Yu Yan Tianwei Chen Huihuang Yu Lucky Ogheneakpobo Ejeta Guanhua Zhang Huigao Duan National Engineering Research Center for High-Efficiency Grinding State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyCollege of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China

The rapid progress of flexible electronics tremendously stimulates the urgent demands for the matching power supply systems. Flexible transparent electrochemical energy conversion and storage devices (FT–EECSDs), with endurable mechanical flexibility, outstanding optical transmittance, excellent electrochemical performance, and additional intelligent functions, are considered as preferable energy supplies for future self-powered flexible electronic systems. A comprehensive review of the reasonable design of flexible transparent electrode and recent progress on the FT–EECSDs is presented herein. The manufacturing techniques of generally classified three types of flexible transparent electrodes are systematically summarized. Emphasis is given to the recent developments in the transparent solid-state electrolyte, flexible transparent energy conversion, and storage devices. The standard evaluation methods and reasonable evaluation parameters to evaluate the flexibility and transparency of FT–EECSDs are highlighted. Additionally, the typical integrated applications of FT–EECSDs are also described. Finally, the current challenges and a future perspective on the research and development direction are further outlined.

关键词： electrochemical energy conversion and storage flexible electronics flexibletransparent elect

来源：评论

学校读者我要写书评

暂无评论

Rational ligand design for enhanced carrier mobility in self-powered SWIR photodiodes based on colloidal InSb quantum dots

引用

NANOSCALE HORIZONS 2024年第5期9卷 817-827页

作者： Chatterjee, Subhashri Nemoto, Kazuhiro Sun, Hong-Tao Shirahata, Naoto Natl Inst Mat Sci NIMS Res Ctr Mat Nanoarchitecton MANA 1-2-1 Sengen Tsukuba 3050047 Japan Hokkaido Univ Grad Sch Chem Sci & Engn Sapporo 0600814 Japan Chuo Univ Dept Phys 1-13-27 Kasuga Bunkyo Tokyo 1128551 Japan Natl Inst Mat Sci CNRS St Gobain NIMS Lab Innovat Key Mat & Struct IRL3629 1-1 Namiki Tsukuba Ibaraki 3050044 Japan

Solution-processed colloidal III-v semiconductor quantum dot photodiodes (QPDs) have potential applications in short-wavelength infrared (SWIR) imaging due to their tunable spectral response range, possible multiple-exciton generation, operation at 0-v bias voltage and low-cost fabrication and are also expected to replace lead- and mercury-based counterparts that are hampered by reliance on restricted elements (RoHS). However, the use of III-v CQDs as photoactive layers in SWIR optoelectronic applications is still a challenge because of underdeveloped ligand engineering for improving the in-plane conductivity of the QD assembled films. Here, we report on ligand engineering of InSb CQDs to enhance the optical response performance of self-powered SWIR QPDs. Specifically, by replacing the conventional ligand (i.e., oleylamine) with sulfide, the interparticle distance between the CQDs was shortened from 5.0 +/- 0.5 nm to 1.5 +/- 0.5 nm, leading to improved carrier mobility for high photoresponse speed to SWIR light. Furthermore, the use of sulfide ligands resulted in a low dark current density (similar to nA cm-2) with an improved EQE of 18.5%, suggesting their potential use in toxic-based infrared image sensors. This study demonstrates selective ligand engineering of InSb colloidal quantum dots (CQD) for enhancing the figure of merit of self-powered short-wave infrared (SWIR) photodiodes.

关键词： Semiconductor quantum dots

来源：评论

学校读者我要写书评

暂无评论

design of a Transimpedance Amplifier for Self-Mixing optical Feedback System

Design of a Transimpedance Amplifier for Self-Mixing Optical...

引用

International Conference on Systems, Control and Automation, ICSCA 2023

作者： Bhardwaj, vibhor Kumar Maini, Surita Teerthanker Mahaveer University Uttar Pradesh Moradabad India Sant Longowal Institute of Engineering and Technology Punjab Sangrur India

ISBN: (纸本)9789819773831

The interferometric signal acquired in the photodetection method, under weak feedback conditions, often has a less magnitude, typically in the microampere range (≈10–6). Due to low magnitude, the characteristical points of the interferometric signal are highly susceptible to noise originating from optical and electronic arrangements. This meager range of current signals has been translated into an appropriate voltage level for faithful signal processing. In this paper, the authors proposed a dedicated transimpedance amplifier (TIA) to convert the photodiode current from 0.05 to 0.4 mA to a voltage level between 0.1 v and 3.2 v. The TIA has been designed using OPA320 and exhibits a gain of 8 kv/A with a −3 dB bandwidth of 250 kHz. The proposed TIA is simulated in TINA-TI and validated by fabricating a four-layer PCB prototype. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： optical feedback

来源：评论

学校读者我要写书评

暂无评论

design and Optimization of EAM for Data Center optical Interconnects

Design and Optimization of EAM for Data Center Optical Inter...

引用

2024 International Conference on Optoelectronic Information and optical engineering, OIOE 2024

作者： Liu, Zehuan Lyu, Chen Pan, Jiaoqing Kong, Liang Zhou, Xuliang Wang, Mengqi Yu, Hongyan Gu, Yongjian Shang, Zhen College of Physics and Optoelectronic Engineering Ocean University of China Shandong Qingdao266100 China Key Laboratory of Optoelectronic Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Xinchen Semiconductor Co. Ltd. Jiangsu Taicang215400 China

ISBN: (数字)9781510680470

ISBN: (纸本)9781510680463

Lasers used in optical interconnects in data centers require electro-absorption modulators (EAMs) with low energy consumption and cost. In this study, we designed and optimized EAM through numerical simulation. By optimizing the doping concentration in the separate confinement heterostructure (SCH) layer, we achieved an increase in the maximum extinction ratio (ER) from 44 dBm to 64 dBm and a reduction in the driving voltage from 3.8 v to 2.9 v. These results provide theoretical support for further reducing the energy consumption and cost of EAM in optical communication, especially in the current era of escalating data volume. © 2024 SPIE.

关键词： optical communication

来源：评论

学校读者我要写书评

暂无评论

Soft Wearable Body-Powered Hydraulic Actuation System for a Prosthetic Finger design

引用

IEEE TRANSACTIONS ON BIOMEDICAL engineering 2024年第12期71卷 3543-3555页

作者： Motaghedolhagh, Kamyar Shariati, Azadeh Homer-vanniasinkam, Shervanthi Wurdemann, Helge UCL Dept Mech Engn London WC1E 7JE England UCL Multiscale Cardiovasc Engn Grp London England

Objective: Finger and fingertip loss is the most common form of upper-limb amputation. With a focus on amputations involving the loss of distal and/or partial middle finger segments, this paper outlines the design and development of a novel soft body-powered hydraulically-driven actuation system for a prosthetic finger, while offering an in-depth examination of its subsystems. Method: The proposed device utilises a soft wearable hydraulic mechanism to transfer pressure from the proximal interphalangeal (PIP) joint of the human finger to the distal interphalangeal (DIP) joint of the prosthetic finger, enabling movement of the soft prosthetic DIP joint. The design parameters of the soft actuator, such as its configuration, constituent material, and volume were analysed through experiments with non-disabled participants. Each participant tried 42 different actuators while flexing their index finger, repeating the task four times, yielding 168 trials per participant. The human and prosthetic finger flexion angles and resultant pressures were measured using an Aurora electromagnetic sensor and a fluid pressure transducer. All data was segmented and analysed. Result: Soft actuator designs were selected through statistical analysis of the material (Agilus 30 and Dragon Skin 30), configuration (chambers located underside or around the PIP joint), and volume. Conclusion: The study demonstrated that the selected soft wearable hydraulic mechanism transferred generated pressure from the participant's PIP joint effectively, enabling movement of the prosthetic digit. Significance: Our research contributes to current developments in versatile body-powered prosthetic devices, laying the foundations for broad applications in affordable healthcare devices.

关键词： Prosthetics Actuators Soft robotics Electronics packaging Hydraulic systems Task analysis Performance evaluation Body-powered prosthetic finger distal interphalangeal joint hydraulically-driven proximal interphalangeal joint soft actuator wearable mechanism

来源：评论

学校读者我要写书评

暂无评论

An overview of recent progress in the development of flexible electrochromic devices

引用

Nano Materials Science 2023年第4期5卷 369-391页

作者： Bin Wang Wu Zhang Feifei Zhao William W.Yu Abdulhakem Y.Elezzabi Linhua Liu Haizeng Li Optics and Thermal Radiation Research Center Institute of Frontier&Interdisciplinary ScienceShandong UniversityQingdao266237China School of Chemistry&Chemical Engineering Shandong UniversityJinan250100China Ultrafast Optics and Nanophotonics Laboratory Department of Electrical and Computer EngineeringUniversity of AlbertaEdmontonAlbertaT6G 2V4Canada

Electrochromic materials are capable of reversibly switching their colors or optical properties through redox reactions under applied voltages,which have shown great potential applications including smart windows,nonemissive displays,optical filters,among *** the current rigid electrochromic devices have shown emerging interest and developed rapidly,many applications(e.g.,wearable/deformable optoelectronics)are blocked due to their inflexible ***,the adaption of rigid electrochromic devices to flexible ones is of particular interest for the new era of smart *** this review,the current state-of-the-art achievements of flexible electrochromic devices(FECDs)are highlighted,along with their design strategies and the choice of electrochromic *** recent research progress of FECDs is reviewed in detail,and the challenges and corresponding solutions for real-world applications of FECDs are ***,we summarize the basic fabrication strategies of FECDs and their potential *** addition,the development trend,the perspectives,and the outlook of FECDs are discussed at the end of this Review,which may provide recommendations and potential directions to advance the practical applications of FECDs.

关键词： Electrochromism Flexible electrochromic devices Optoelectronics optical materials

来源：评论

学校读者我要写书评

暂无评论

Infrared Detector developments at Teledyne e2v for current and Future Missions

Infrared Detector Developments at Teledyne e2v for Current a...

引用

2022 International Conference on Space Optics, ICSO 2022

作者： Swindells, Ian Wheeler, Ross Jerram, Paul Kendall, Jeremey Read, Iain Teledyne e2v 106 Waterhouse Lane ChelmsfordCM1 2QU United Kingdom

ISBN: (纸本)9781510668034

There is increased interest in hyperspectral imaging space missions as a powerful remote sensing technique for Earth observation. The Teledyne HgCdTe FPA and digital ROIC technology enable Teledyne e2v to provide wide bandwidth, high frame-rate detector solutions that are enabling a simplification in hyperspectral instrument design for both institutional large scale missions and for future commercial constellations. In parallel Teledyne e2v are developing III-v technology for surveillance applications that could find use in future generations of space based instruments. © 2023 SPIE. All rights reserved.

关键词： Cadmium alloys

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：