检索结果-内蒙古大学图书馆

Conference on optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI

作者： Werner, Jan Belz, Mathias Klein, Karl-Friedrich Sun, Tong Grattan, K. T., v World Precis Instruments Germany GmbH Pfingstweide 16 D-61169 Friedberg Germany City Univ London Sch Math Comp Sci & Engn Northampton Sq London EC1V 0HB England Univ Appl Sci THM Wilhelm Leuschner Str 13 D-61169 Friedberg Germany

ISBN: (数字)9781510641068

ISBN: (纸本)9781510641068

optical, and especially fiber-optic techniques for the sensing of pH have become very attractive and considerable research progress in this field has been made over a number of years. The determination of the pH level across a broad range of applications today, e.g. in life sciences, environmental monitoring, industry and widely in biologically research is now accessible from such optical sensors. This arises because familiar sensors are often limited in terms of their response time and drift, which reduces the use of the current group of such fiber-optic sensors in wider applications. A new compact sensor design has been developed in this work, based on a specially-formed fiber-optic tip that was coated with a pH-sensitive dye, covalently linked to a hydrogel matrix to provide high stability. The sensor developed has a very fast response time (to 90% of saturation, Delta t(90)) of < 5 seconds, a sensing uncertainty of about +/- 0.04 pH units and given the covalently bonded nature of the dye, leeching is reduced and the probe is very stable over many days of use. During extended continuous use over similar to 12h in pH 7, this stability was confirmed, with drift of < 0.05 pH/h. Preliminary experiments in an important biological application, monitoring over pH levels from pH 5 to pH 8.5, are shown and discussed.

关键词： pH measurement fast response time fiber-optic optical fiber sensors fluorescence luminescence biomedical measurements

来源：评论

学校读者我要写书评

暂无评论

design and optimization of a blue fluorescent microcavity-organic light-emitting diode (MOLED) on AZO anode for an algae excitation light source application

引用

Materials Today: Proceedings 2023年 93卷 61-67页

作者： L.A. Lozano-Hernández J.B. Doucet B. Reig L. Salvagnac H.Y. Lee C.T. Lee S. Calvez I. Séguy v. Bardinal LAAS-CNRS 7 avenue du colonel Roche 31400 Toulouse France Department of Photonics National Cheng Kung University Tainan 701 Taiwan Republic of China Institute of Microelectronics Department of Electrical Engineering National Cheng Kung University Taiwan 701 Taiwan Republic of China Department of Electrical Engineering Yuan Ze University Taoyuan 320 Taiwan Republic of China

In this work, we present simultaneous organic light-emitting diode (OLED) stack optimization and optical modelling for a blue microcavity-OLED (MOLED) based on AZO anode to be used as algae excitation light in optical biosensor. Fluorescent materials (MADN and DPAvBi) were chosen as host:guest for the doped emissive layer due their known stability compared to phosphorescent and thermally activated delayed fluorescence (TADF) materials. The MOLED modelling was performed by targeting 470 nm as the maximal excitation wavelength and suppressing the emission in the algae fluorescence bandwidth (600–800 nm) in order to fulfil the sensor requirements. By using a bilayer hole transport layer/electron blocking layer (HTL/EBL) instead of a single HTL, the total thickness was adjusted to meet the resonance wavelength condition without loss of efficiency, while at the same time preserving a maximum electric field intensity in the emissive layer (antinode position). MOLED devices were fabricated by organic semiconductor evaporation on three dielectric distributed Bragg reflectors (DBRs) with 3 different numbers of TiO 2 /SiO 2 (high-index/low-index) pairs and aluminum-doped zinc oxide (AZO) transparent electrode. Devices with 1.5 pairs as DBR showed not only an improved external quantum efficiency (+33%) compared to a standard OLED but also an increase of about 3 times the intensity of the peak at 470 nm combined to a lower emission in the 600–800 nm bandwidth, as aimed. This increase in the peak intensity should lead to a longer device lifetime, as the current density necessary to excite algae at 470 nm is significantly lower owing to the microcavity effect.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Novel technologies for Linac-based radiotherapy 23

Novel technologies for Linac-based radiotherapy

引用

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII 2021

作者： Kutsaev, Sergey v. Boucher, Salime Mustapha, Brahim Sheng, Ke RadiaBeam Technologies LLC 1717 Stewart St. Santa MonicaCA90404 United States Argonne National Laboratory 9700 S. Cass Ave. LemontIL60439 United States Department of Radiation Oncology University of California Los AngelesCA90095 United States

ISBN: (数字)9781510645158

ISBN: (纸本)9781510645141

The three most popular radiation oncology technologies are based on using beams of photons, electrons, and hadrons (protons and heavy ions). Photon radiotherapy is currently a quite mature and advanced technology. However, it continues to evolve toward improvement of its medical effectiveness and set new requirements for the radiation source, which is typically an electron linear accelerator (linac). For example, novel techniques that involve tumor irradiation from 4π angle or FLASH ultrafast delivery of large doses cannot be efficiently realized with the existing accelerators. At the same time, hadron radiotherapy promises improved treatment outcomes in certain cases. Efforts are underway to develop more compact hadron linac technologies with the ability to change the beam energy in millisecond time scales for efficient spot scanning. In this paper we will overview the current trends in linac technologies for electron, photon and hadron therapy, and provide examples of such developments at RadiaBeam. © COPYRIGHT SPIE.

关键词： Carbon

来源：评论

学校读者我要写书评

暂无评论

A Wireless Neural Interface Device for Simultaneous Optogenetics and Neural Recording

A Wireless Neural Interface Device for Simultaneous Optogene...

引用

IEEE Biomedical Circuits and Systems (BIOCAS)

作者： Yongxiang Guo Zhixiong Ma Dawid Sheng Jiaxin Lei Milin Zhang Tongfei Wang Xing Sheng Department of Electronic Engineering Tsinghua University Beijing National Research Center for Information Science and Technology Tsinghua University Chinese Institute for Brain Research (CIBR) Beijing

This paper proposed a wireless neural interface device integrated both optical stimulation for optogenetics and neural recording. The proposed design enables advanced multiple-mode neuromodulation paradigms performed on a freely moving animal subject. Bluetooth Low Energy (BLE) is used for wireless control and data transmission. The recording channels support an 8k Samples/s data rate and a 24-bit data resolution with low-noise PGA of 2.8μv rms and low power consumption of 335μW/channel. The stimulation channels allow a maximum output current of 10mA which can drive micro-LED probes for optical stimulation implanted in animals. The programmable Micro Controller Unit (MCU) enables open/closed-loop neural modulation. Measurement results and in-vivo experiment demonstrate the feasibility and efficacy of the proposed wireless neural interface device.

关键词：

来源：评论

学校读者我要写书评

暂无评论

飞秒激光加工微纳光学器件

引用

光电工程 2023年第3期50卷 74-99页

作者：董彬张娟王达伟张亦元张乐然李瑞辛晨刘顺利张子航吴昊蒋绍军朱苏皖刘炳瑞吴东中国科学技术大学精密机械与精密仪器系中国科学院材料力学行为与设计重点实验室安徽省高等学校精密科学仪器重点实验室安徽合肥230026 中国科学技术大学第一附属医院生命科学与医学部安徽合肥230001

光学器件正在向着小型化、集成化以及柔性可变形等方向发展,基于集成微纳光学器件的光学系统以其较低的功耗、快速的响应时间以及高信息容量等优势脱颖而出。然而目前的高精度微纳加工手段如聚焦离子束(focused ion beam,FIB)刻蚀、半... 详细信息

光学器件正在向着小型化、集成化以及柔性可变形等方向发展,基于集成微纳光学器件的光学系统以其较低的功耗、快速的响应时间以及高信息容量等优势脱颖而出。然而目前的高精度微纳加工手段如聚焦离子束(focused ion beam,FIB)刻蚀、半导体光刻等工艺复杂,且缺乏灵活性。飞秒激光作为一种非接触、高精度、高脉冲强度的“冷”加工工具在微纳加工方面受到格外青睐。本文首先阐述了飞秒激光加工微纳光学器件的背景及相关机理,然后讨论了提高飞秒激光加工分辨率的各种方法,接着综述了基于飞秒激光的多种先进加工手段,其后总结了近年来飞秒激光加工微透镜、光栅、光波导以及光子晶体方面的代表性研究进展。最后,本文概括了飞秒激光加工微纳光学器件研究领域所面临的挑战以及未来发展方向。

关键词：飞秒激光高精度微纳结构光学器件

来源：评论

学校读者我要写书评

暂无评论

A simple and effective host for sodium metal anode: a 3D-printed high pyrrolic-N doped graphene microlattice aerogel

引用

JOURNAL OF MATERIALS CHEMISTRY A 2022年第32期10卷 16842-16852页

作者： Yang, Haoyuan Wang, Hui Li, Weidong Tian, Bofang Xu, Tingting Kong, Dezhi Huang, Shaozhuan Liu, Kaikai Li, Xinjian Yang, Hui Ying Wang, Ye Zhengzhou Univ Sch Phys & Microelect Key Lab Mat Phys Minist Educ Zhengzhou 450052 Peoples R China City Univ Hong Kong Ctr Super Diamond & Adv Films COSDAF Dept Chem Hong Kong 999077 Peoples R China South Cent Univ Nationalities Key Lab Catalysis & Energy Mat Chem Minist Educ Wuhan 430074 Hubei Peoples R China Singapore Univ Technol & Design Pillar Engn Prod Dev 8 Somapah Rd Singapore 487372 Singapore

Rechargeable sodium metal batteries are promising candidates for next-generation low-cost rechargeable batteries by virtue of the abundance and low cost of Na resources. However, safety issues caused by uncontrollable Na dendrites prevent its further development. Herein, we developed a three-dimensional (3D) printed nitrogen doped graphene aerogel (3DP-NGA) microlattice host to regulate uniform Na nucleation and deposition. Density functional theory (DFT) calculation results indicate that the sodiophilic sites mainly originate from pyrrolic-N defects, which can be easily created and controlled by plasma treatment. With the designed architecture and N doping-induced sodiophilic surface, the 3DP-NGA microlattice can effectively guide sodium ion flux and deposition as well as decrease the nucleation energy barrier and provide abundant nucleation sites, leading to the homogeneous deposition of Na without dendrite formation, as demonstrated by in situ optical microscopy characterization. Encouragingly, the 3DP-NGA microlattice delivers low nucleation overpotentials (9.9 and 14.8 mv at 0.5 and 1.0 mA cm(-2), respectively) and an ultralong cycle-life over 2000 h (3000 cycles) with an average coulombic efficiency of 99.90% at a high current density of 3.0 mA cm(-2) with 1.0 mA h cm(-2). Moreover, at a high Na loading of 10.0 mA h cm(-2) (747.6 mA h g(-1)), the electrode can cycle stably over 500 h. Finally, a 3D-printed full battery consisting of Na@3DP-NGA anode and 3D-printed Na3v2(PO4)(3)C-rGO (3DP-NvP@C-rGO) cathode was assembled and delivered a capacity of 85.3 mA h g(-1) at 100.0 mA g(-1) after 1000 cycles.

关键词： Graphene

来源：评论

学校读者我要写书评

暂无评论

Advances in Electrochemical and Catalytic Performance of Nanostructured FeCo₂O₄ and Its Composites

引用

CHEMISTRY-AN ASIAN JOURNAL 2021年第19期16卷 2871-2895页

作者： Shetgaonkar, Sarvesha S. Salkar, Akshay v. Morajkar, Pranay P. Goa Univ Sch Chem Sci Taleigao Plateau Goa India

It is well established that the excessive and uncontrolled use of fossil fuels and organic chemicals have put a risk to the earth's environment and the life that sustains within it. Carbon-free, sustainable, alternative energy technologies have therefore become the prime focus of current research. Smart inorganic materials have emerged as the potential solution to suffice energy needs and remediate the organic pollutants discharged to the environment. One such promising, versatile material is FeCo2O4 which has gained immense research interest in the present decade due to its high efficiency and performance in energy and environmental applications. Innovative material design strategies involving the interplay of nanostructured morphology, chemical composition, redox surface states, and defect engineering have significantly enhanced both electrochemical and catalytic properties of FeCo2O4. Therefore, this review article aims to provide the first-ever comprehensive account of the latest research and developments in design-synthesis strategies, characterization techniques, and applications of nanostructured FeCo2O4 and its composites in various electrochemical as well as catalytic applications. A detailed account of the nanostructured FeCo2O4 and its composites in various energy storage and conversion devices such as supercapacitors (SCs), batteries, and fuel cells has been presented. Furthermore, a special section has been devoted to highlight the role of FeCo2O4 in enhancing the sluggish reaction kinetics of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in water splitting application. This review also highlights the role of nanostructured FeCo2O4 in photocatalytic waste water treatment, gas sensing, and dual-phase membrane technologies wherein FeCo2O4 has demonstrated promising performance.

关键词： FeCo2O4 Nanostructures Supercapacitors Batteries Photocatalysis

来源：评论

学校读者我要写书评

暂无评论

New trends in 3D and 4D printed dental and orthopedic Implants: Methods, applications and future directions

引用

Bioprinting 2025年 48卷

作者： Moghanian, Amirhossein Asadi, Parviz Akbari, Mostafa Mohammad Aliha, Mohammad Reza Kizilkurtlu, Ahmet Akif Akpek, Ali Safaee, Sirus Department of Materials Engineering Imam Khomeini International University Qazvin 34149-16818 Iran Department of Mechanical Engineering Faculty of Engineering Imam Khomeini International University Qazvin 34149-16818 Iran Department of Mechanical Engineering National University of Skills (NUS) Tehran Iran Welding and Joining Research Center School of Industrial Engineering Iran University of Science and Technology (IUST) Narmak Tehran 16846-13114 Iran Institute of Biotechnology Gebze Technical University Gebze Kocaeli Turkey Department of Biomedical Engineering Yıldız Technical University Turkey Department of Prosthetic Dentistry of Biomedical Sciences Nagasaki University 1-7-1 Sakamoto Nagasaki 852-8588 Japan

This review explores the emerging trends in 3D and 4D printing technologies for dental and orthopedic implants, highlighting innovative methods, diverse applications, and potential future developments. Integrating advanced materials and printing techniques has revolutionized the customization and production of implants, enabling tailored solutions that enhance patient outcomes. Meanwhile, the review examines the current landscape of additive manufacturing in the medical field, focusing on how these technologies improve implants' design, functionality, and biocompatibility. Additionally, this review discusses the implications of 4D printing, which introduces dynamic properties to implants, allowing for adaptive responses to environmental stimuli. Future directions include the exploration of bioactive materials and the potential for in-situ printing in surgical settings, paving the way for more efficient and personalized healthcare solutions. Eventually, this study aims to provide insights into the transformative impact of 3D and 4D printing on the field of dental and orthopedic medicine. © 2025 Elsevier B.v.

关键词： 3D printing 4D printing Biocompatibility Dental applications Healthcare Orthopedic implants

来源：评论

学校读者我要写书评

暂无评论

A review of the role of graphene-based nanomaterials in tackling challenges posed by the COvID-19 pandemic

引用

MICROBIAL PATHOGENESIS 2024年 197卷 107059页

作者： Kumar, Sachin Sharma Ashok Bashir, Shahid Pershaanaa, M. Kamarulazam, Fathiah Kuppusamy, A. v. Badawi, Nujud Ramesh, K. Ramesh, S. Univ Malaya Ctr Ion Univ Malaya Fac Sci Dept Phys Kuala Lumpur 50603 Malaysia Taylors Univ Sch Engn 1 Jalan Taylors Subang Jaya 47500 Selangor Malaysia Univ Malaya Higher Inst Ctr Excellence HICoE UM Power Energy Dedicated Adv Ctr UMPEDAC Wisma R&D Level 4 Kuala Lumpur 59990 Malaysia Manipal Int Univ Sch Engn & Comp Nilai 71800 Negeri Sembilan Malaysia Univ Hafr Al Batin Coll Sci Hafer Al Batin 39921 Saudi Arabia Saveetha Univ SIMATS Saveetha Sch Engn Dept Phys Sci Chennai India

In 2020, the World Health Organization (WHO) declared a pandemic due to the emergence of the coronavirus disease (COvID-19) which had resulted by severe acute respiratory syndrome coronavirus 2 (SARS-Cov-2). At present, the emergence of many new variants and mutants were found to be more harmful compared to the previous strains. As a result, research scientists around the world had devoted significant efforts to understand the mechanism, causes and transmission due to COvID-19 along with the treatment to cure these diseases. However, despite achieving several findings, much more was unknown and yet to be explored. Hence, along with these developments, it is also extremely essential to design effective systems by incorporating smart materials to battle the COvID-19. Therefore, several approaches have been implemented to combat against COvID-19. Recently, the graphene-based materials have been explored for the current COvID-19 and future pandemics due to its superior physicochemical properties, providing efficient nanoplatforms for optical and electrochemical sensing and diagnostic applications with high sensitivity and selectivity. Moreover, based on the photothermal effects or reactive oxygen species formation, the carbon-based nanomaterials have shown its potentiality for targeted antiviral drug delivery and the inhibitory effects against pathogenic viruses. Therefore, this review article sheds light on the recent progress and the most promising strategies related to graphene and related materials and its applications for detection, decontamination, diagnosis, and protection against COvID-19. In addition, the key challenges and future directives are discussed in detail for fundamental design and development of technologies based on graphene-based materials along with the demand aspects of graphene-based products and lastly, our personal opinions on the appropriate approaches to improve these technologies respectively.

关键词： COvID-19 Graphene Graphene oxide (GO) Anti-viral SARS-Cov-2 Electrochemical biosensors Face mask

来源：评论

学校读者我要写书评

暂无评论

Computational Evaluation of Lead Free $\text{MoSe}_{2}$-Based Thin Film Solar Cell for Enhanced Photovoltaic Performance

Computational Evaluation of Lead Free $\text{MoSe}_{2}$-Base...

引用

Advances in Computing,Communication, Electrical, and Smart Systems (iCACCESS), International Conference on

作者： Md. Shahriar Rahman Ushna Das Md. Abdul Kaium Mia Md. Ferdous Wahid Department of Electrical and Electronic Engineering Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh

Seeking a sustainable and ecologically friendly alternative to lead-based solar cells (SCs), this study explores Molyb-denum Diselenide $(\text{MoSe}_{2})$ as a promising absorber material by leveraging its compelli...

Seeking a sustainable and ecologically friendly alternative to lead-based solar cells (SCs), this study explores Molyb-denum Diselenide $(\text{MoSe}_design)$ as a promising absorber material by leveraging its compelling structural, electrical and optical features to improve SC efficiency. Initial analysis via Density Functional Theory (DFT) using CASTEP software revealed $\text{MoSe}_design$ ‘s bandgap at 1.22 e v, aligning closely with experimental values. Building upon this fundamental understanding, a novel device architecture is proposed encompassing Mo $\text{Se}_2$ as the absorber layer, $\mathrm{v}_design\mathrm{O}_{5}$ as the hole transport layer (HTL), WS 2 as the electron transport layer (ETL) and FTO as the transparent conductive oxide (TCO). various parameters, including absorber layer thickness and doping density, parasitic resistance, temperature, back contact and bragg reflector were systematically altered to evaluate their influence on the photovoltaic parameters using SCAPS-ID. This simulation reveals open-circuit voltage $(\mathrm{v}_{oc})$ of 0.88 v, short-circuit current density $(\mathrm{J}_{sc})$ of 42.80 ${\mathrm{m}}\mathrm{A}/\text{cm}^design$ , fill factor (FF) of 85.53 % and an impressive power conversion efficiency (PCE) of 32.01 %. These findings demonstrate Mo $\text{Se}_2$ ‘s potential as a safer and more productive material for solar cell applications, shedding light on ways to optimize solar cell design for better performance.

关键词：

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：