Micromachines最新文献_第5页

Tunable Acoustic Tweezer System for Precise Three-Dimensional Particle Manipulation. 用于精确三维粒子操纵的可调谐声镊系统

IF 3 3区工程技术

Micromachines Pub Date : 2024-10-08 DOI: 10.3390/mi15101240

Jiyun Nan, Hiep Xuan Cao, Jong-Oh Park, Eunpyo Choi, Byungjeon Kang

{"title":"Tunable Acoustic Tweezer System for Precise Three-Dimensional Particle Manipulation.","authors":"Jiyun Nan, Hiep Xuan Cao, Jong-Oh Park, Eunpyo Choi, Byungjeon Kang","doi":"10.3390/mi15101240","DOIUrl":"https://doi.org/10.3390/mi15101240","url":null,"abstract":"This study introduces a tunable acoustic tweezer system designed for precise three-dimensional particle trapping and manipulation. The system utilizes a dual-liquid-layer acoustic lens, which enables the dynamic control of the focal length through the adjustable curvature of a latex membrane. This tunability is essential for generating the acoustic forces necessary for effective manipulation of particles, particularly along the direction of acoustic wave propagation (z-axis). Experiments conducted with spherical particles as small as 1.5 mm in diameter demonstrated the system's capability for stable trapping and manipulation. Performance was rigorously evaluated through both z-axis and 3D manipulation tests. In the z-axis experiments, the system achieved a manipulation range of 33.4-53.4 mm, with a root-mean-square error and standard deviation of 0.044 ± 0.045 mm, which highlights its precision. Further, the 3D manipulation experiments showed that particles could be accurately guided along complex paths, including multilayer rectangular and helical trajectories, with minimal deviation. A visual feedback-based particle navigation system significantly enhanced positional accuracy, reducing errors relative to open-loop control. These results confirm that the tunable acoustic tweezer system is a robust tool for applications requiring precise control of particles with diameter of 1.5 mm in three-dimensional environments. Considering its ability to dynamically adjust the focal point and maintain stable trapping, this system is well suited for tasks demanding high precision, such as targeted particle delivery and other applications involving advanced material manipulation.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509511/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Area-Time-Efficient Secure Comb Scalar Multiplication Architecture Based on Recoding. 基于重编码的面积-时间高效安全组合标量乘法体系结构。

IF 3 3区工程技术

Micromachines Pub Date : 2024-10-07 DOI: 10.3390/mi15101238

Zhantao Zhang, Weijiang Wang, Jingqi Zhang, Xiang He, Mingzhi Ma, Shiwei Ren, Hua Dang

{"title":"Area-Time-Efficient Secure Comb Scalar Multiplication Architecture Based on Recoding.","authors":"Zhantao Zhang, Weijiang Wang, Jingqi Zhang, Xiang He, Mingzhi Ma, Shiwei Ren, Hua Dang","doi":"10.3390/mi15101238","DOIUrl":"https://doi.org/10.3390/mi15101238","url":null,"abstract":"With the development of mobile communication, digital signatures with low latency, low area, and high security are in increasing demand. Elliptic curve cryptography (ECC) is widely used because of its security and lightweight. Elliptic curve scalar multiplication (ECSM) is the basic arithmetic in ECC. Based on this background information, we propose our own research objectives. In this paper, a low-latency and low-area ECSM architecture based on the comb algorithm is proposed. The detailed methodology is as follows. The recoding-k algorithm and randomization-Z algorithm are used to improve security, which can resist sample power analysis (SPA) and differential power analysis (DPA). A low-area multi-functional architecture for comb is proposed, which takes into account different stages of the comb algorithm. Based on this, the data dependency is considered and the comb architecture is optimized to achieve a uniform and efficient execution pattern. The interleaved modular multiplication algorithm and modified binary inverse algorithm are used to achieve short clock cycle delay and high frequency while taking into account the need for a low area. The proposed architecture has been implemented on Xilinx Virtex-7 series FPGA to perform ECSM on 256-bits prime field GF(p). In the hardware architecture with only 7351 slices of resource usage, a single ECSM only takes 0.74 ms, resulting in an area-time product (ATP) of 5.41. The implementation results show that our design can compete with the existing state-of-the-art engineering in terms of performance and has higher security. Our design is suitable for computing scenarios where security and computing speed are required. The implementation of the overall architecture is of great significance and inspiration to the research community.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509111/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Study on Transverse Mode Instability in Raman Fiber Amplifiers Considering Mode Excitation. 拉曼光纤放大器中横向模式不稳定性的理论研究（考虑模式激励）。

IF 3 3区工程技术

Micromachines Pub Date : 2024-10-07 DOI: 10.3390/mi15101237

Shanmin Huang, Xiulu Hao, Haobo Li, Chenchen Fan, Xiao Chen, Tianfu Yao, Liangjin Huang, Pu Zhou

{"title":"Theoretical Study on Transverse Mode Instability in Raman Fiber Amplifiers Considering Mode Excitation.","authors":"Shanmin Huang, Xiulu Hao, Haobo Li, Chenchen Fan, Xiao Chen, Tianfu Yao, Liangjin Huang, Pu Zhou","doi":"10.3390/mi15101237","DOIUrl":"https://doi.org/10.3390/mi15101237","url":null,"abstract":"Raman fiber lasers (RFLs), which are based on the stimulated Raman scattering effect, generate laser beams and offer distinct advantages such as flexibility in wavelength, low quantum defects, and absence from photo-darkening. However, as the power of the RFLs increases, heat generation emerges as a critical constraint on further power scaling. This escalating thermal load might result in transverse mode instability (TMI), thereby posing a significant challenge to the development of RFLs. In this work, a static model of the TMI effect in a high-power Raman fiber amplifier based on stimulated thermal Rayleigh scattering is established considering higher-order mode excitation. The variations of TMI threshold power with different seed power levels, fundamental mode purities, higher-order mode losses, and fiber lengths are investigated, while a TMI threshold formula with fundamental mode pumping is derived. This work will enrich the theoretical model of TMI and extend its application scope in TMI mitigation strategies, providing guidance for understanding and suppressing TMI in the RFLs.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IR-Drop-Based Temperature Distribution in Large-Size AMOLED Panel. 基于红外滴的大尺寸 AMOLED 面板温度分布。

IF 3 3区工程技术

Micromachines Pub Date : 2024-10-04 DOI: 10.3390/mi15101236

Qibin Feng, Hongtao Ren, Zhe Dong, Zi Wang, Guoqiang Lv

{"title":"IR-Drop-Based Temperature Distribution in Large-Size AMOLED Panel.","authors":"Qibin Feng, Hongtao Ren, Zhe Dong, Zi Wang, Guoqiang Lv","doi":"10.3390/mi15101236","DOIUrl":"https://doi.org/10.3390/mi15101236","url":null,"abstract":"Large-size and high-resolution AMOLED displays have become one of the most attractive display technologies. However, the dependence of the luminance of AMOLED on temperature severely limits wider applications. The accurate temperature distribution is important for implementing compensation into a panel to improve display uniformity. With the increase in size and resolution, the voltage drop (IR-drop) caused by the resistance of the power supply line cannot be ignored, which has influence on temperature distribution. Therefore, this paper proposes a temperature distribution analysis method based on IR-drop. Firstly, an accurate solution of IR-drop of AMOLED panels is achieved by exploiting the sparse representation in the field of artificial intelligence. Secondly, the IR-drop-based power model is established, and the output of the power model is used as the input of the AMOLED thermal simulation model. Finally, the temperature distribution of the AMOLED panel is obtained by finite-element analysis. The temperature measurements are performed on a 95-inch 8K AMOLED panel. The simulation results are compared with the actual measurements, and it is found that the temperature distribution based on IR-drop matches well with the actual measurements than that without considering IR-drop. The analysis method proposed in this paper presents high accuracy and high practicability.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Pressure Sensor Based on the Interaction between a Hard Magnet Magnetorheological Elastomer and a Hall Effect Structure. 基于硬磁体磁流变弹性体与霍尔效应结构相互作用的压力传感器

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101221

Onejae Sul, Sung Joong Choo, In-Sik Jee, Jeengi Kim, Hyeong-Jun Kim

引用次数: 0

Lightweight Hotspot Detection Model Fusing SE and ECA Mechanisms. 融合 SE 和 ECA 机制的轻量级热点检测模型。

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101217

Yanning Chen, Yanjiang Li, Bo Wu, Fang Liu, Yongfeng Deng, Xiaolong Jiang, Zebang Lin, Kun Ren, Dawei Gao

引用次数: 0

3D Light-Direction Sensor Based on Segmented Concentric Nanorings Combined with Deep Learning. 基于分段同心纳米环与深度学习的 3D 光向传感器

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101219

Pengcheng Huang, Peijin Wu, Ziyuan Guo, Zhicheng Ye

{"title":"3D Light-Direction Sensor Based on Segmented Concentric Nanorings Combined with Deep Learning.","authors":"Pengcheng Huang, Peijin Wu, Ziyuan Guo, Zhicheng Ye","doi":"10.3390/mi15101219","DOIUrl":"https://doi.org/10.3390/mi15101219","url":null,"abstract":"High-precision, ultra-thin angular detectable imaging upon a single pixel holds significant promise for light-field detection and reconstruction, thereby catalyzing advancements in machine vision and interaction technology. Traditional light-direction angle sensors relying on optical components like gratings and lenses face inherent constraints from diffraction limits in achieving device miniaturization. Recently, angle sensors via coupled double nanowires have demonstrated prowess in attaining high-precision angle perception of incident light at sub-wavelength device scales, which may herald a novel design paradigm for ultra-compact angle sensors. However, the current approach to measuring the three-dimensional (3D) incident light direction is unstable. In this paper, we propose a sensor concept capable of discerning the 3D light-direction based on a segmented concentric nanoring structure that is sensitive to both elevation angle (θ) and azimuth angle (ϕ) at a micrometer device scale and is validated through simulations. Through deep learning (DL) analysis and prediction, our simulations reveal that for angle scanning with a step size of 1°, the device can still achieve a detection range of 0∼360° for ϕ and 45°∼90° for θ, with an average accuracy of 0.19°, and DL can further solve some data aliasing problems to expand the sensing range. Our design broadens the angle sensing dimension based on mutual resonance coupling among nanoring segments, and through waveguide implementation or sensor array arrangements, the detection range can be flexibly adjusted to accommodate diverse application scenarios.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509479/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Sensing Method to Detect Malachite Green Contaminant on Silicon Substrate Using Nonlinear Optics. 利用非线性光学技术检测硅基板上孔雀石绿污染物的新型传感方法

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101227

Muhammad Ahyad, Hendradi Hardhienata, Eddwi Hesky Hasdeo, Sasfan Arman Wella, Faridah Handayasari, Husin Alatas, Muhammad Danang Birowosuto

{"title":"A Novel Sensing Method to Detect Malachite Green Contaminant on Silicon Substrate Using Nonlinear Optics.","authors":"Muhammad Ahyad, Hendradi Hardhienata, Eddwi Hesky Hasdeo, Sasfan Arman Wella, Faridah Handayasari, Husin Alatas, Muhammad Danang Birowosuto","doi":"10.3390/mi15101227","DOIUrl":"https://doi.org/10.3390/mi15101227","url":null,"abstract":"We propose a nonlinear-optics-based nanosensor to detect malachite green (MG) contaminants on semiconductor interfaces such as silicon (Si). Applying the simplified bond hyperpolarizability model (SBHM), we simplified the second-harmonic generation (SHG) analysis of an MG-Si(111) surface and were able to validate our model by reproducing experimental rotational anisotropy (RA) SHG experiments. For the first time, density functional theory (DFT) calculations using ultrasoft pseudopotentials were implemented to obtain the molecular configuration and bond vector orientation required by the SBHM to investigate and predict the second-harmonic generation contribution for an MG-Si 001 surface. We show that the SBHM model significantly reduces the number of independent components in the nonlinear tensor of the MG-Si(111) interface, opening up the possibility for real-time and non-destructive contaminant detection at the nanoscale. In addition, we derive an explicit formula for the SHG far field, demonstrating its applicability for various input polarization angles. Finally, an RASHG signal can be enhanced through a simulated photonic crystal cavity up to 4000 times for more sensitivity of detection. Our work can stimulate more exploration using nonlinear optical methods to detect and analyze surface-bound contaminants, which is beneficial for environmental monitoring, especially for mitigating pollution from textile dyes, and underscores the role of nonlinear optics in real-time ambient-condition applications.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509378/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of Buried Microchannels with Almost Circular Cross-Section Using HNA Wet Etching. 利用 HNA 湿蚀刻技术制造近似圆形横截面的埋入式微通道

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101230

Qihui Yu, Henk-Willem Veltkamp, Remco J Wiegerink, Joost C Lötters

引用次数: 0

Research Advances in Electrospun Nanofiber Membranes for Non-Invasive Medical Applications. 用于非侵入性医疗应用的电纺纳米纤维膜的研究进展。

IF 3 3区工程技术

Micromachines Pub Date : 2024-09-30 DOI: 10.3390/mi15101226

Junhua Wang, Chongyang You, Yanwei Xu, Tancheng Xie, Yi Wang

{"title":"Research Advances in Electrospun Nanofiber Membranes for Non-Invasive Medical Applications.","authors":"Junhua Wang, Chongyang You, Yanwei Xu, Tancheng Xie, Yi Wang","doi":"10.3390/mi15101226","DOIUrl":"https://doi.org/10.3390/mi15101226","url":null,"abstract":"Non-invasive medical nanofiber technology, characterized by its high specific surface area, biocompatibility, and porosity, holds significant potential in various medical domains, including tissue repair and biosensing. It is increasingly becoming central to healthcare by offering safer and more efficient treatment options for contemporary medicine. Numerous studies have explored non-invasive medical nanofibers in recent years, yet a comprehensive overview of the field remains lacking. In this paper, we provide a comprehensive summary of the applications of electrospun nanofibers in non-invasive medical fields, considering multiple aspects and perspectives. Initially, we introduce electrospinning nanofibers. Subsequently, we detail their applications in non-invasive health, including health monitoring, personal protection, thermal regulation, and wound care, highlighting their critical role in improving human health. Lastly, this paper discusses the current challenges associated with electrospun nanofibers and offers insights into potential future development trajectories.","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"15 10","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11509555/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142503731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0