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15th International conference on Information Optics and Photonics, CIOP 2024

作者： Song, Yuzhou Geng, Zihan Chen, Mu Ku Institute of Data and Information Tsinghua Shenzhen International Graduate School Tsinghua University Guangdong Shenzhen China Department of Electrical Engineering City University of Hong Kong Hong Kong The State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong Hong Kong

ISBN: (数字)9781510686175

ISBN: (纸本)9781510686168

In this paper, we present the development and applications of the novel cascaded meta-device, which integrates metasurfaces into the Moirélens design to achieve a lightweight, multi-functional platform with precise tunability. These devices leverage the unique properties of metasurfaces and the rotational degree of freedom introduced by the Moiréeffect, enabling continuous control of the transmission function to achieve various functionalities across different electromagnetic fields. We demonstrate the effectiveness of this approach in three key applications: fluorescence microscopy, 6G communication systems, and Airy beam generation. Our results show that the cascaded meta-device enhances performance in these areas by providing extensive tunability and reducing device complexity and form factor. The findings of this study suggest that cascaded meta-devices have the potential to drive innovations in optical imaging, communication technologies, and beyond. © 2024 SPIE.

关键词： Fluorescence microscopy

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RT-MDM: Real-Time Scheduling Framework for Multi-DNN on MCU Using External Memory 24

RT-MDM: Real-Time Scheduling Framework for Multi-DNN on MCU ...

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61st ACM/IEEE design Automation conference, DAC 2024

作者： Kang, Sukmin Lee, Seongtae Koo, Hyunwoo Chwa, Hoon Sung Lee, Jinkyu Dept. of Semiconductor and Display Engineering Sungkyunkwan University Korea Republic of Samsung Electronics Co. Ltd. Korea Republic of Dept. of Computer Science and Engineering Sungkyunkwan University Korea Republic of School of Electronic and Electrical Engineering Sungkyunkwan University Korea Republic of Dept. of Electrical Engineering and Computer Science Dgist Korea Republic of

ISBN: (纸本)9798400706011

As the application scope of DNNs executed on microcontroller units (MCUs) extends to time-critical systems, it becomes important to ensure timing guarantees for increasing demand of DNN inferences. To this end, this paper proposes RT-MDM, the first RealTime scheduling framework for Multiple DNN tasks executed on an MCU using external memory. Identifying execution-order dependencies among segmented DNN models and memory requirements for parallel execution subject to the dependencies, we propose (i) a segment-group-based memory management policy that achieves isolated memory usage within a segment group and sharded memory usage across different segment groups, and (ii) an intra-task scheduler specialized for the proposed policy. Implementing RT-MDM on an actual system and optimizing its parameters for DNN segmentation and segment-group mapping, we demonstrate the effectiveness of RT-MDM in accommodating more DNN tasks while providing their timing guarantees. © 2024 Copyright is held by the owner/author(s). Publication rights licensed to ACM.

关键词： Memory management

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More Is Better: Dual-Acceptor engineering for Constructing Second Near-Infrared Aggregation-Induced Emission Luminogens to Boost Multimodal Phototheranostics

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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 2023年第41期145卷 22776-22787页

作者： Yang, Shiping Zhang, Jianyu Zhang, Zhijun Zhang, Rongyuan Ou, Xinwen Xu, Weilin Kang, Miaomiao Li, Xue Yan, Dingyuan Kwok, Ryan T. K. Sun, Jianwei Lam, Jacky W. Y. Wang, Dong Tang, Ben Zhong Hong Kong Univ Sci & Technol Chinese Natl Engn Res Ctr Tissue Tissue Restorat & Div Life Sci Hong Kong BranchDept ChemState Key Lab Mol Neuro Hong Kong 999077 Peoples R China Hong Kong Univ Sci & Technol Guangdong Hong Kong Macau Joint Lab Optoelect & Ma Hong Kong 999077 Peoples R China Shenzhen Univ Coll Mat Sci & Engn Ctr AIE Res Shenzhen 518060 Peoples R China Chinese Univ Hong Kong Shenzhen Inst Aggregate Sci & Technol Sch Sci & Engn Shenzhen 518172 Guangdong Peoples R China South China Univ Technol Ctr Aggregat Induced Emiss Guangzhou 510640 Peoples R China

The manipulation of electron donor/acceptor (D/A) shows an endless impetus for innovating optical materials. Currently, there is booming development in electron donor design, while research on electron acceptor engineering has received limited attention. Inspired by the philosophical idea of "more is different", two systems with D '-D-A-D-D ' (1A system) and D '-D-A-A-D-D ' (2A system) structures based on acceptor engineering were designed and studied. It was demonstrated that the 1A system presented a weak aggregation-induced emission (AIE) to aggregation-caused quenching (ACQ) phenomenon, along with the increased acceptor electrophilicity and planarity. In sharp contrast, the 2A system with one more acceptor exhibited an opposite ACQ-to-AIE transformation. Interestingly, the fluorophore with a more electron-deficient A-A moiety in the 2A system displayed superior AIE activity. More importantly, all compounds in the 2A system showed significantly higher molar absorptivity (epsilon) in comparison to their counterparts in the 1A system. Thanks to the highest epsilon, near-infrared-ii (NIR-ii, 1000-1700 nm) emission, desirable AIE property, favorable reactive oxygen species (ROS) generation, and high photothermal conversion efficiency, a representative member of the 2A system handily performed in fluorescence-photoacoustic-photothermal multimodal imaging-guided photodynamic-photothermal collaborative therapy for efficient tumor elimination. Meanwhile, the NIR-ii fluorescence imaging of blood vessels and lymph nodes in living mice was also accomplished. This study provides the first evidence that the dual-connected acceptor tactic could be a new molecular design direction for the AIE effect, resulting in high epsilon, aggregation-intensified NIR-ii fluorescence emission, and improved ROS and heat generation capacities of phototheranostic agents.

关键词： Fluorescence Irradiation Lasers Molecules Tumors

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Simulation of the QDPSK modulation and demodulation system based on Quartus ii

Simulation of the QDPSK modulation and demodulation system b...

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2023 International conference on Intelligent systems, Communications, and Computer Networks, ISCCN 2023

作者： Wei, Yunfeng Xin, Kaijun Luzhou City Market Inspection and Testing Center Luzhou Sichuan646000 China

ISBN: (纸本)9781510666238

The carrier signal is subject to interference and attenuation in the channel transmission process. In this paper, a highperformance anti-interference method for the modulation and demodulation of phase modulation QDPSK signals is proposed, and the programming and waveform simulation of the QDPSK system are conducted based on an analysis of the module. In addition, good modulation and demodulation effects are achieved in the waveform experiment, indicating the correctness and practicality of the QDPSK system. © 2023 SPIE. All rights reserved.

关键词： Demodulation

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design and development of an integrated LiDAR sensor for autonomous driving – achieved results 21

Design and development of an integrated LiDAR sensor for aut...

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Electro-optical and Infrared systems: Technology and Applications XXI 2024

作者： Hofbauer, A. Reichert, R. Hennecke, M. Baumgart, M. Tortschanoff, A. Kirillov, B. Pfennigbauer, M. RIEGL Research & Defense GmbH Riedenburgstraße 48 Horn3580 Austria Infineon Technologies Austria AG Babenbergerstraße 10 Graz8020 Austria Silicon Austria Labs GmbH High Tech Campus Villach - Europastraße 12 Villach9524 Austria

ISBN: (纸本)9781510681088

The Austrian research project iLIDS4SAM – Integrated LiDAR Sensors for Safe & Smart Automated Mobility – addressed the requirements and challenges of LiDAR systems for autonomous driving. In the course of the project a LiDAR sensor demonstrator aiming at these requirements was designed and developed to the level of an elegant breadboard. Integrating highly innovative technologies, this LiDAR sensor is the very first realization of a newly designed scanner concept and is, thus, in many aspects a proof of concept, but also a technology carrier for future LiDAR sensor developments. Benefitting from the high angular point density as well as the high frame rate offered by the new concept, it is not only attractive for automotive LiDAR systems but also for industrial LiDAR applications which require the acquisition of a high amount of range measurements within a narrow field of view in a very short time. The basic design of the LiDAR sensor as well as the intended requirements and specifications were already presented during Sensors + Imaging conference in September 2023. This contribution gives insight into the final phase of the research project, discusses the challenges arising during the realization of the LiDAR sensor and presents the achieved results. Based on point clouds acquired with the LiDAR sensor and artifacts identified therein, shortcomings of the scanner concept as well as the integrated components are discussed and improvement measures suggested. © 2024 SPIE.

关键词： Laser recording

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A Multiscale Parametric Study to Drug Delivery Modeling in Stented Arteries 46

A Multiscale Parametric Study to Drug Delivery Modeling in S...

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46th Annual International conference of the IEEE engineering in Medicine and Biology Society, EMBC 2024

作者： Pleouras, Dimitrios S. Loukas, Vasileios S. Karanasiou, Georgia S. Antonaki, Anastasia Fotiadis, Dimitrios I. Sakellarios, Antonis I. University of Ioannina Dept. of Materials Science and Engineering Ioannina Greece University of Ioannina Biomedical Resarch Institute FORTH-IMBB Unit of Medical Technology and Intelligent Information Systems Dept. of Materials Science and Engineering IoanninaGR 45110 Greece University of Ioannina Unit of Medical Technology and Intelligent Information Systems Dept. of Materials Science and Engineering Ioannina Greece University of Patras Dept. of Mechanical and Aeronautics Engineering Patras Greece

ISBN: (纸本)9798350371499

The aim of this work is to investigate the dynamic behavior of retinoic acid concentration within the coronary artery, examining its distribution both on the stent and to the lumen and the arterial wall. The study aims to elucidate the effect of various factors, including variations in retinoic acid concentration on the stent, the applied blood flow velocity as boundary condition within the lumen, the polymer layer porosity, the arterial wall porosity and the drug permeability. Through a comprehensive analysis of these factors, this research seeks to advance the understanding of how retinoic acid behaves in the complex environment of the coronary artery, offering valuable insights into potential therapeutic applications and advances in cardiovascular medicine. To do this, a multiscale computational model for drug delivery is employed and applied in a stented arterial segment. 3D reconstruction of the arterial artery was achieved using optical coherence tomography (OCT) and X-ray angiography. The positioning of stent geometry was performed using finite element modeling of stent deployment. The results demonstrate that changes to important parameters of the model lead to significant changes to the drug *** Relevance: The importance of this work is related to the development and design of new coronary stents and potentially consider the patient's phenotype and provide personalized applications. © 2024 IEEE.

关键词： optical coherence tomography

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optical Response in Strained Type-ii AlInAs/AlSb Ultrathin QW Heterostructure 2nd

Optical Response in Strained Type-II AlInAs/AlSb Ultrathin Q...

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2nd conference on Flexible Electronics for Electric Vehicles, FlexEV 2021

作者： Singh, Amit Kumar Singh, Rohit Chowdhury, Dibyendu Rathi, Amit Department of Electronics and Communication Engineering Manipal University Jaipur Jaipur303007 India Department of Electrical Engineering Shiv Nadar University G. B. Nagar Greater Noida201314 India Department of Electronics and Communication Engineering Haldia Institute of Technology West Bengal Haldia India

ISBN: (纸本)9789811905872

AlSb/InAs heterostructure has a unique band alignment with a large conduction band offset finding application in a range of electronic devices. AlSb-based heterostructures have very recently been utilized for the fabrication of HEMTs, FETs, memories, and photodetectors. In this paper, the band structure, wave functions, dispersion curve, and optical gain of AlSb/AlInAs heterostructure have been reported. Kane 8 × 8 model with self-consistent calculations has been used to obtain the optical gain in type-ii AlInAs/AlSb heterostructure as a function of 2D carrier injection. The peak TM optical gain at an energy of 0.652 eV is observed to be 1662 cm−1, while the peak TE optical gain is found to be 1271 cm−1 at an energy of 0.649 eV for a 2D charge carrier injection of 5 × 1012 cm−2. Further, a gradual blueshift is observed in the optical gain spectra as the 2D charge carrier injection is increased. The heterostructure has been found to operate in NIR, IR-B range with a high optical gain. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： iiI-V semiconductors

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Small-Scale V2V-VLC for Enhanced Road Traffic Safety 30

Small-Scale V2V-VLC for Enhanced Road Traffic Safety

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30th IEEE International Symposium for design and Technology in Electronic Packaging, SiiTME 2024

作者： Moussa, Elie Hajj Marcu, Alina-Elena Chehade, Rima Abdallah Ballouz, Gilles Ionescu, Bogdan Lebanese University Faculty of Engineering-Branch II Roumieh Lebanon National University of Science and Technology POLITEHNICA Bucharest Bucharest Romania

ISBN: (纸本)9798331539511

In the context of global research aimed at enhancing data transfer rates and efficiency, light emerges as a cost-free and unregulated asset that has the potential to revolutionize communication technologies. The complete replacement of conventional lighting with LEDs led to the development of a novel optical communication system. Visible light communication (VLC) uses LEDs as transmitters and photodetectors or image sensors as receivers. The technology has significant potential for a range of applications, especially in intelligent transport systems (ITS). In this context, the headlights and taillights of vehicles can transmit different types of information to other vehicles, enhancing traffic safety and ultimately preventing fatalities on the road. The paper proposes a small-scale vehicle-To-vehicle ITS that uses robot-Type cars that are equipped with emission and reception modules. The cars transmit various information using VLC to implement a variety of events, including emergency braking, deceleration, left or right turns, and engine on/off, all of which are essential for road traffic safety. The maximum distance between vehicles that ensures successful data transmission will also be determined. © 2024 IEEE.

关键词： Highway accidents

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A Wireless Neural Interface Device for Simultaneous Optogenetics and Neural Recording

A Wireless Neural Interface Device for Simultaneous Optogene...

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2023 IEEE Biomedical Circuits and systems conference, BioCAS 2023

作者： Guo, Yongxiang Ma, Zhixiong Sheng, Dawid Lei, Jiaxin Zhang, Milin Wang, Tongfei Sheng, Xing Tsinghua University Department of Electronic Engineering China Tsinghua University Beijing National Research Center for Information Science and Technology China Beijing China

ISBN: (纸本)9798350300260

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 2.8μVrms 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. © 2023 IEEE.

关键词： Micro-LED Probe Neural Recording optical Stimulation Optogenetics Wireless Neural Interface

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Implementation of Energy Efficient Full Adder for Arithmetic Application 3rd

Implementation of Energy Efficient Full Adder for Arithmetic...

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3rd International conference on Micro and Nanoelectronics Devices, Circuits and systems, MNDCS 2023

作者： Hussain, Md. Shahbaz Kandpal, Jyoti Hasan, Mohd Guha, Koushik Z.H College of Engineering and Technology Aligarh Muslim University Aligarh India Graphic Era Hill University Dehradun India National Institute of Technology Silchar Assam India

ISBN: (纸本)9789819944941

This study reports the implementation of a hybrid CMOS-based 1-bit full adder (FA) circuit. The need for noise robustness, better drivability and low-energy operation for deep submicron encourage the examination of the hybrid design style. Hybrid CMOS design techniques are utilized to propose new full-featured adders with the desired performance. Module I (XOR-XNOR) generates the XOR-XNOR output simultaneously. Module ii and Module iiI are implemented using the PTL and TG logic. In this work, 16 nm FinFET technology is used to implement a novel design of hybrid FA. The proposed design shows 29.37–71.90% and 38.96–81.56% improvement in power consumption and PDP, respectively. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Adders

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