检索结果-内蒙古大学图书馆

Liquid crystal between two distributed Bragg reflectors enables multispectral small-pitch spatial light modulator

Light(Science & Applications) 2022年第8期11卷 1643-1645页

作者： Junghyun Park Kanghee Won Young Kim Advanced Sensor Lab Device Research CenterSamsung Advanced Institute of TechnologySuwonRepublic of Korea

The ability of controlling the phase of light at the subwavelength scale can be a game-changer due to its extraordinally wide angle-range in the wavefront shaping. By combining two conventional material and configurat... 详细信息

关键词： crystal enable light

来源：评论

学校读者我要写书评

暂无评论

Novel medium entropy perovskite oxide Sr(FeCoNiMo)_(1/4)O_(3−δ)for zinc-air battery cathode

引用

Journal of Energy Chemistry 2024年第9期96卷 669-678页

作者： Kaixin Li Juntao Gao Xu Han Qi Shao Zhe Lü School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor Components Harbin 150001HeilongjiangChina

It is widely recognized that the development of ZABs is impeded by the kinetic bottleneck of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).The application of conformational entropy strategy to oxides often involves introducing multiple elements with different properties,thereby providing outstanding bifunctional catalytic activity for OER/***,the possible underlying catalytic pathways and potential interactions between various components are still poorly *** paper presents an excellent medium-entropy perovskite oxide,Sr(FeCoNiMo)_(1/4)O_(3−δ)(lower overpotential of 301 mV at 10 mA cm^(−2)).Zinc-air batteries employing it as a cathode catalyst demonstrate excellent round-trip efficiency(62%).By combining theoretical calculation with experiments,we aim to establish the link between the electronic structure of perovskite oxides with different elemental compositions and their OER *** reveals that the conformational entropy strategy can simultaneously shift the O 2p-band center and metal d-band center of perovskite oxide towards the vicinity of the Fermi energy level,thereby triggering a more favorable lattice oxygen-participated mechanism(LOM)during the OER *** outcomes of this work provide crucial insights into the role of conformational entropy strategies in oxygen catalysis and offer potential avenues for constructing efficient and stable electrocatalysts.

关键词： Sr(FeCoNiMo)_(1/4)O_(3−δ) Bifunctional catalyst Medium entropy LOM Rechargeable zinc-air batteries

来源：评论

学校读者我要写书评

暂无评论

Polyvinylidene Difluoride/Sb2S3 Composite Film as a Potential Candidate for Piezoelectric Energy Generation

引用

Journal of The Institution of Engineers (India): Series D 2024年第1期105卷 147-153页

作者： Baral, Apurba Mukherjee, Nillohit School of Advanced Materials Green Energy and Sensor Systems Indian Institute of Engineering Science and Technology Shibpur Botanic Garden West Bengal Howrah711103 India

In this work, antimony sulphide (Sb2S3) in powder form was prepared using a simple chemical bath deposition technique by taking potassium antimonyl tartrate hemihydrate (K(SbO)C4H4O6), 0.5H2O) and sodium thiosulphate pentahydrate (Na2S2O3, 5H2O) as the source of Sb and S, respectively. The polymer, polyvinylidene difluoride (PVDF) was then impregnated by this chemically prepared Sb2S3 with varying wt% and PVDF/Sb2S3 composites were prepared in the form of films using solution casting method. Detailed structural/compositional characterization was carried out through x-ray diffraction, differential scanning calorimetry, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and atomic force microscopy techniques with the synthesized materials. The PVDF/Sb2S3 composite films were also subjected to thorough electrical characterization that revealed excellent piezoelectric attributes. The voltage, current density and power output obtained from this composite film were highly impressive (~ 90 V, ~ 19 µA/cm2 and ~ 19,400 W/m3 across 1 MΩ load, respectively) making it worthy to use as a clean energy generator. The device was also utilized to charge a 2.2 µF-63 V capacitor up to ~ 40 V with simple finger patting. The results open up the avenue for utilizing this PVDF/Sb2S3 composite film in real life application as a clean energy generator. © The Institution of Engineers (India) 2023.

关键词： Sulfur compounds

来源：评论

学校读者我要写书评

暂无评论

Design and Simulation of a PV System with Battery Storage Using Bifacial Halfcut Module 8

Design and Simulation of a PV System with Battery Storage Us...

引用

8th International Conference on Electronics, Materials Engineering and Nano-technology, IEMENTech 2025

作者： Bala, Sourav Sarkar, Sudipta Maity, Santanu Mukhopadhyay, Sumita School of Advanced Materials Indian Institute of Engineering Science and Technology Green Energy and Sensor Systems Howrah Shibpur India

ISBN: (纸本)9798331520762

In the absence of conventional energy sources renewable energy is the only suitable option left. Multiple renewable energy sources like Hydroelectric Energy, Tidal Energy, Geothermal Energy, and Solar Electrical Energy are becoming popular every day. There are multiple reasons such as its availability in small to large sizes, predictability, easy installation, smooth maintenance process, drop in system installation cost, and mostly fast return on investment. With the increase in demand for solar photovoltaic panels, the demand for producing higher power output from less area is increasing rapidly. Hence with every breakthrough, the efficiency of the Photovoltaic Panel is increasing rapidly. With continuous development, the PV modules are developed in such a way that light can be absorbed from the front and rear on both sides. In the Bi-facial module, the direct sunlight gets absorbed from the front, and the albedo is also absorbed from the back to increase the power generation further. With the implementation of half-cut technology, the shading losses are minimized further. Rapid development is also being done on MPPT and Inverter to improve efficiency. Presently a generalized mathematical model for bifacial half-cut module is not published in any literature. In this paper, the research gap is covered by designing a Bifacial Half-cut PV Module along with an MPPT and also a bidirectional DC-DC Converter for charging and discharging of Battery Bank. Finally, we have integrated the system and also have simulated the designed system to check its stability. Such a model helps in analyzing and validating performance characteristics of commercially available bifacial modules and half-cut modules. © 2025 IEEE.

关键词： Tidal power

来源：评论

学校读者我要写书评

暂无评论

Cross-Modal Graph Semantic Communication Assisted by Generative AI in the Metaverse for 6G

引用

Research 2024年第2期2024卷 19-27页

作者： Mingkai Chen Minghao Liu Congyan Wang Xingnuo Song Zhe Zhang Yannan Xie Lei Wang Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsNanjng 210003China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts and TelecommunicationsNanjing 210023China

Recently, the development of the Metaverse has become a frontier spotlight, which is an important demonstration of the integration innovation of advanced technologies in the Internet. Moreover, artificial intelligence (AI) and 6G communications will be widely used in our daily lives. However, the effective interactions with the representations of multimodal data among users via 6G communications is the main challenge in the Metaverse. In this work, we introduce an intelligent cross-modal graph semantic communication approach based on generative AI and 3-dimensional (3D) point clouds to improve the diversity of multimodal representations in the Metaverse. Using a graph neural network, multimodal data can be recorded by key semantic features related to the real scenarios. Then, we compress the semantic features using a graph transformer encoder at the transmitter, which can extract the semantic representations through the cross-modal attention mechanisms. Next, we leverage a graph semantic validation mechanism to guarantee the exactness of the overall data at the receiver. Furthermore, we adopt generative AI to regenerate multimodal data in virtual scenarios. Simultaneously, a novel 3D generative reconstruction network is constructed from the 3D point clouds, which can transfer the data from images to 3D models, and we infer the multimodal data into the 3D models to increase realism in virtual scenarios. Finally, the experiment results demonstrate that cross-modal graph semantic communication, assisted by generative AI, has substantial potential for enhancing user interactions in the 6G communications and Metaverse.

关键词： modal frontier guarantee

来源：评论

学校读者我要写书评

暂无评论

Electrochemically Deposited Cu(II)/Cu(I) Oxide Heterostructure as Highly Sensitive Platform for Electrochemical Detection of Glucose and Methanol

引用

Journal of The Institution of Engineers (India): Series D 2024年第3期105卷 1361-1371页

作者： Mondal, Rimpa Ahmed, Sk. Faruque Mukherjee, Nillohit Department of Physics Aliah University West Bengal Newtown Kolkata700156 India School of Advanced Materials Green Energy and Sensor Systems Indian Institute of Engineering Science and Technology Shibpur West Bengal Howrah711103 India

Detection of glucose level and in human body is very essential in many ways. Besides glucose, methanol also plays crucial role in human physiology as it can influence human nervous system. So, detection of any imbalance in methanol level is also crucial. For this purpose, in this work, CuO/Cu2O bulk heterostructures were electrochemically deposited in the form of thin films on ITO-coated glass substrates using cyclic voltammetry and amperometrically. The deposited films were characterized using X-ray diffraction technique (XRD), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and UV–Vis spectroscopy. The electrochemical attributes of the deposited films towards glucose and methanol sensing were studied through cyclic voltammetry (CV), amperometric i-t and electrochemical impedance spectroscopy (EIS). From the linear fit plot, the sensitivity was found to be 237.7 µA µM−1 cm−2 with LoD (limit of detection) of 19.8 µM and up to 1.2 mM concentration of glucose. Further, for methanol, both LoD and sensitivity values were found to be 0.007 µM and 0.016 µA/µ***2, respectively. The results are quite promising for the deposited material for its possible real-life applications as sensing platform for the electrochemical D-glucose and methanol detections. © The Institution of Engineers (India) 2024.

关键词： Copper oxides

来源：评论

学校读者我要写书评

暂无评论

Real-Time LIDAR Imaging by Solid-State Single Chip Beam Scanner

Real-Time LIDAR Imaging by Solid-State Single Chip Beam Scan...

引用

IS and T International Symposium on Electronic Imaging: Autonomous Vehicles and Machines, AVM 2022

作者： Lee, Jisan Son, Kyunghyun Lee, Changbum Hwang, Inoh Jang, Bongyong Lee, Eun Kyung Shim, Dongshik Byun, Hyunil Shin, Changgyun Tatsuhiro, Otsuka Cho, YongChul Ha, Kyoungho Choo, Hyuck Advanced Sensor Lab. Samsung Advanced Institute of Technology Samsung Electronics Korea Republic of

We present a real-time light detection and ranging (LIDAR) imaging by developing a single-chip solid-state beam scanner. The beam scanner is integrated with a fully functional 32-channel optical phased array, 36 optical amplifiers, and a tunable laser at central wavelength ~1310 nm, all on a 7.5 × 3 mm2 single chip fabricated with III-V on silicon processes. The phased array is calibrated with self-evolving genetic algorithm to enable beam forming and steering in two dimensions. Distance measurement is performed with a digital signal processing that measures the time of flight (TOF) of pulsed light with a system consisting of an avalanche photodiode (APD), trans-impedance amplifier (TIA), analog-digital converter (ADC), and a processor. The LIDAR module utilizing this system can acquire point cloud images with 120 × 20 resolution with a speed of 20 frames per seconds at a distance up to 20 meters. This work presents the first demonstration of a chip-scale LIDAR solution without any moving part or bulk external light source or amplifier, making an ultra-low cost and compact LIDAR technology a reality. © 2022, Society for Imaging Science and technology.

关键词： Light sources

来源：评论

学校读者我要写书评

暂无评论

Design and Testing of an IoT Enabled RFID Based Automatic Luggage Sorting and Tracking System

Design and Testing of an IoT Enabled RFID Based Automatic Lu...

引用

2024 IEEE Calcutta Conference, CALCON 2024

作者： Chatterjee, Tiyasa Sarkar, Sudipta Basak, Ambik Pal, Soumyadip Mondal, Ashoke RCC Institute of Information Technology Department of Electronics and Communication Engineering Kolkata India Indian Institute of Engineering Science and Technology Shibpur School of Advanced Materials Green Energy and Sensor Systems Howrah India

ISBN: (纸本)9798331516666

In the present day, the number of people travelling in flight is rapidly increasing. All the passengers travelling through these airlines carry luggage. Which is increasing luggage. At the airport, all this luggage goes through multiple processes like checking, tagging, shorting, etc. In this process, due to various reasons, they got lost. Paper-based barcodes are used for ragging the luggage. The barcode method of luggage sorting is time-consuming, and prone to technical errors as the tags can store only limited data and the date needs to be manually updated. Damaged tags result in loss of cargo during the loading process. This article focuses on analysing the real-life problem of luggage sorting and tracking at a busy airport by using two advanced technologies RFID and IoT. Among multiple literature on RFID Based Luggage Sorting there is a gap in implementing IoT-based tracking of luggage, along with RFID-based identification. Which brings novelty to this project. The paper aims to provide a simplified technique for automatic luggage sorting using RFID and tracking over IoT, along with design, implementation and testing data. © 2024 IEEE.

关键词： Radio frequency identification (RFID)

来源：评论

学校读者我要写书评

暂无评论

Palm-sized LiDAR module with III/V-on-Si optical phased array

Palm-sized LiDAR module with III/V-on-Si optical phased arra...

引用

2022 IEEE Symposium on VLSI technology and Circuits, VLSI technology and Circuits 2022

作者： Son, Kyunghyun Shin, Dongjae Lee, Jisan Jang, Bongyong Shim, Dongsik Byun, Hyunil Lee, Changbum Cho, Yongchul Otsuka, Tatsuhiro Shin, Changgyun Hwang, Inoh Lee, Eun Kyung Ha, Kyoungho Choo, Hyuck Samsung Advanced Institute of Technology Samsung Electronics Advanced Sensor Lab. Suwon Korea Republic of

ISBN: (纸本)9781665497725

We have implemented a compact, highly accurate light detection and ranging (LiDAR) module using our III/V-on-Si optical phased array (OPA). Our module measures only 1.4 liter in volume, and we demonstrated 20-m ranging and 10-m 3D imaging with 1-cm accuracy under 100-klx bright sunlight. The accuracy was improved by 300% from our previous work [1] by employing sub-binning-based digital signal processing (DSP). The small size and its robust 3D depth-sensing performance promise strong commercial viability. © 2022 IEEE.

关键词： Digital signal processing

来源：评论

学校读者我要写书评

暂无评论

Manipulating Zr/Ti ratio based on phase diagram for large electrocaloric effects with multiple target operation temperatures in PLZT ceramics

引用

Journal of advanced Ceramics 2024年第9期13卷 1422-1431页

作者： Junjie Li Ruowei Yin Zhe Xiong Yizheng Bao Xing Zhang Wenjuan Wu Lezhong Li Yang Bai Sichuan Province Key Laboratory of Information Materials and Devices Application College of Optoelectronic Engineeringand Chengdu IC Valley Industrial CollegeChengdu University of Information TechnologyChengdu 610225China Beijing Advanced Innovation Center for Materials Genome Engineering and Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Chengdu Hongming Electronics Co. Ltd.Chengdu 610199China Key Laboratory of Inorganic Functional Materials and Devices Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201800China Sichuan Meteorological Optoelectronic Sensor Technology and Application Engineering Research Center Chengdu University of Information TechnologyChengdu 610225China

Ferroelectric phase transition has been identified as a promising avenue for designing high-performanceelectrocaloric materials for zero-emission and solid-state refrigeration. However, extensive research has been limited todeveloping ferroelectric materials with large electrocaloric effects near room temperature, preventing them from meetingdiverse refrigeration requirements. In this study, by leveraging the room-temperature phase diagram of the (PbLa)(ZrTi)O_(3)solution, we prepared a series of Pb_(0.775)La_(0.15)Zr_(x)Ti_(1−x)O_(3) bulk ceramics spanning the ferroelectric and relaxor ferroelectricphase regions. This enabled the attainment of various phase transition features and temperatures. Finally, largeelectrocaloric effects, coupled with adjustable operation temperatures ranging from 150 to −45℃, are successfullyachieved through manipulation of the Zr/Ti ratio. This comprehensive range of operation temperatures effectively addressesdiverse refrigeration application requirements, ranging from industrial equipment to freezer cabinets. This work not onlyunderscores the expansion of the electrocaloric refrigeration application domain but also proposes a material designstrategy tailored to meet these evolving demands.

关键词： electrocaloric effect phase transition phase diagram ferroelectric ceramics

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：