Microsystems & Nanoengineering最新文献_第4页

System-level modeling with temperature compensation for a CMOS-MEMS monolithic calorimetric flow sensing SoC. 基于温度补偿的CMOS-MEMS单片热流量传感SoC系统级建模。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-20 DOI: 10.1038/s41378-024-00853-8

Linze Hong, Ke Xiao, Xiangyu Song, Liwei Lin, Wei Xu

{"title":"System-level modeling with temperature compensation for a CMOS-MEMS monolithic calorimetric flow sensing SoC.","authors":"Linze Hong, Ke Xiao, Xiangyu Song, Liwei Lin, Wei Xu","doi":"10.1038/s41378-024-00853-8","DOIUrl":"10.1038/s41378-024-00853-8","url":null,"abstract":"We present a system-level model with an on-chip temperature compensation technique for a CMOS-MEMS monolithic calorimetric flow sensing SoC. The model encompasses mechanical, thermal, and electrical domains to facilitate the co-design of a MEMS sensor and CMOS interface circuits on the EDA platform. The compensation strategy is implemented on-chip with a variable temperature difference heating circuit. Results show that the linear programming for the low-temperature drift in the SoC output is characterized by a compensation resistor Rc with a resistance value of 748.21 Ω and a temperature coefficient of resistance of 3.037 × 10-3 °C-1 at 25 °C. Experimental validation demonstrates that within an ambient temperature range of 0-50 °C and a flow range of 0-10 m/s, the temperature drift of the sensor is reduced to ±1.6%, as compared to ±8.9% observed in a counterpart with the constant temperature difference circuit. Therefore, this on-chip temperature-compensated CMOS-MEMS flow sensing SoC is promising for low-cost sensing applications such as respiratory monitoring and smart energy-efficient buildings.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"13"},"PeriodicalIF":7.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11743593/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Acoustic frequency comb generation on a composite diamond/silicon microcantilever in ambient air. 环境空气中复合金刚石/硅微悬臂的声频率梳状产生。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-17 DOI: 10.1038/s41378-025-00866-x

Zhixin Zhao, Yanyan Li, Wangyang Zhang, Wenyao Luo, Duo Liu

引用次数: 0

Flexible micromachined ultrasound transducers (MUTs) for biomedical applications. 生物医学应用的柔性微机械超声换能器（MUTs）。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-16 DOI: 10.1038/s41378-024-00783-5

Sanjog Vilas Joshi, Sina Sadeghpour, Nadezda Kuznetsova, Chen Wang, Michael Kraft

{"title":"Flexible micromachined ultrasound transducers (MUTs) for biomedical applications.","authors":"Sanjog Vilas Joshi, Sina Sadeghpour, Nadezda Kuznetsova, Chen Wang, Michael Kraft","doi":"10.1038/s41378-024-00783-5","DOIUrl":"10.1038/s41378-024-00783-5","url":null,"abstract":"The use of bulk piezoelectric transducer arrays in medical imaging is a well-established technology that operates based on thickness mode piezoelectric vibration. Meanwhile, advancements in fabrication techniques have led to the emergence of micromachined alternatives, namely, piezoelectric micromachined ultrasound transducer (PMUT) and capacitive micromachined ultrasound transducer (CMUT). These devices operate in flexural mode using piezoelectric thin films and electrostatic forces, respectively. In addition, the development of flexible ultrasound transducers based on these principles has opened up new possibilities for biomedical applications, including biomedical imaging, sensing, and stimulation. This review provides a detailed discussion of the need for flexible micromachined ultrasound transducers (MUTs) and potential applications, their specifications, materials, fabrication, and electronics integration. Specifically, the review covers fabrication approaches and compares the performance specifications of flexible PMUTs and CMUTs, including resonance frequency, sensitivity, flexibility, and other relevant factors. Finally, the review concludes with an outlook on the challenges and opportunities associated with the realization of efficient MUTs with high performance and flexibility.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"9"},"PeriodicalIF":7.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11736036/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ultra-sensitive fluorescence-activated droplet single-cell sorting based on Tetramer-HCR-EvaGreen amplification. 基于四聚体- hcr - evgreen扩增的超灵敏荧光激活液滴单细胞分选。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-16 DOI: 10.1038/s41378-024-00861-8

Long Chen, Yi Xu, Lele Zhou, Ding Ma, Rong Zhang, Yifan Liu, Xianqiang Mi

{"title":"Ultra-sensitive fluorescence-activated droplet single-cell sorting based on Tetramer-HCR-EvaGreen amplification.","authors":"Long Chen, Yi Xu, Lele Zhou, Ding Ma, Rong Zhang, Yifan Liu, Xianqiang Mi","doi":"10.1038/s41378-024-00861-8","DOIUrl":"10.1038/s41378-024-00861-8","url":null,"abstract":"The current single-cell analysis technologies such as fluorescence-activated cell sorting (FACS) and fluorescence-activated droplet sorting (FADS) could decipher the cellular heterogeneity but were constrained by low sorting performance and cell viability. Here, an ultra-sensitive single-cell sorting platform has been developed by integrating the FADS technology with Tetramer-HCR-EvaGreen (THE) fluorescence signal amplification. The THE system produced much higher fluorescence signal than that of the single Tetramer or Tetramer-HCR signal amplification. Upon application to target MCF-7 cells, the platform exhibited high efficacy and selectivity while maintaining more than 95% cell viability. The THE-FADS achieved sorting efficiencies of 55.5% and 50.3% with purities of 91% and 85% for MCF-7 cells in PBS solutions and simulated serum samples, respectively. The sorted MCF-7 cells showed similar proliferation together with CK19 and EGFR mRNA expression compared with the control cells. The established THE-FADS showed the promising prospects to cellular heterogeneity understanding and personalized medicine.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"10"},"PeriodicalIF":7.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739583/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Optofluidic paper-based analytical device for discriminative detection of organic substances via digital color coding. 通过数字颜色编码判别检测有机物质的光流纸质分析装置。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-16 DOI: 10.1038/s41378-024-00865-4

Jinsol Choi, Chi Yeung Oh, Gong Qian, Tae Soup Shim, Heon-Ho Jeong

{"title":"Optofluidic paper-based analytical device for discriminative detection of organic substances via digital color coding.","authors":"Jinsol Choi, Chi Yeung Oh, Gong Qian, Tae Soup Shim, Heon-Ho Jeong","doi":"10.1038/s41378-024-00865-4","DOIUrl":"10.1038/s41378-024-00865-4","url":null,"abstract":"Developing a portable yet affordable method for the discrimination of chemical substances with good sensitivity and selectivity is essential for on-site visual detection of unknown substances. Herein, we propose an optofluidic paper-based analytical device (PAD) that consists of a macromolecule-driven flow (MDF) gate and photonic crystal (PhC) coding units, enabling portable and scalable detection and discrimination of various organic chemical, mimicking the olfactory system. The MDF gate is designed for precise flow control of liquid analytes, which depends on intermolecular interactions between the polymer at the MDF gate and the liquid analytes. Subsequently, the PhC coding unit allows for visualizing the result obtained from the MDF gate and generating differential optical patterns. We fabricate an optofluidic PAD by integrating two coding units into a three-dimensional (3D) microfluidic paper within a 3D-printed cartridge. The optofluidic PADs clearly distinguish 11 organic chemicals with digital readout of pattern recognition from colorimetric signals. We believe that our optofluidic coding strategy mimicking the olfactory system opens up a wide range of potential applications in colorimetric monitoring of chemicals observed in environment.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"11"},"PeriodicalIF":7.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11739424/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 wearable device integrating ECG and PCG for cardiac health monitoring. 一种集成ECG和PCG的新型可穿戴设备，用于心脏健康监测。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-15 DOI: 10.1038/s41378-024-00858-3

Junbin Zang, Qi An, Bo Li, Zhidong Zhang, Libo Gao, Chenyang Xue

{"title":"A novel wearable device integrating ECG and PCG for cardiac health monitoring.","authors":"Junbin Zang, Qi An, Bo Li, Zhidong Zhang, Libo Gao, Chenyang Xue","doi":"10.1038/s41378-024-00858-3","DOIUrl":"10.1038/s41378-024-00858-3","url":null,"abstract":"The alarming prevalence and mortality rates associated with cardiovascular diseases have emphasized the urgency for innovative detection solutions. Traditional methods, often costly, bulky, and prone to subjectivity, fall short of meeting the need for daily monitoring. Digital and portable wearable monitoring devices have emerged as a promising research frontier. This study introduces a wearable system that integrates electrocardiogram (ECG) and phonocardiogram (PCG) detection. By ingeniously pairing a contact-type PZT heart sound sensing structure with ECG electrodes, the system achieves the acquisition of high-quality ECG and PCG signals. Notably, the signal-to-noise ratios (SNR) for ECG and PCG signals were measured at 44.13 dB and 30.04 dB, respectively, demonstrating the system's remarkable stability across varying conditions. These collected signals were subsequently utilized to derive crucial feature values, including electromechanical delay (EMD), left ventricular ejection time (LVET), and pre-ejection period (PEP). Furthermore, we collected a dataset comprising 40 cases of ECG and PCG signals, enabling a comparative analysis of these three feature parameters between healthy individuals and coronary heart disease patients. This research endeavor presents a significant step forward in the realm of early, non-invasive, and intelligent monitoring of cardiovascular diseases, offering hope for earlier detection and more effective management of these life-threatening conditions.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"7"},"PeriodicalIF":7.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11735617/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

NEMS generated electromechanical frequency combs. NEMS生成的机电频率梳。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-15 DOI: 10.1038/s41378-024-00860-9

Sasan Rahmanian, Hamza Mouharrar, Rana Abdelrahman, Masoud Akbari, Yasser S Shama, Kevin Musselman, David Muñoz-Rojas, Skandar Basrour, Eihab Abdel Rahman

{"title":"NEMS generated electromechanical frequency combs.","authors":"Sasan Rahmanian, Hamza Mouharrar, Rana Abdelrahman, Masoud Akbari, Yasser S Shama, Kevin Musselman, David Muñoz-Rojas, Skandar Basrour, Eihab Abdel Rahman","doi":"10.1038/s41378-024-00860-9","DOIUrl":"10.1038/s41378-024-00860-9","url":null,"abstract":"This paper presents a novel technique for low-power generation of frequency combs (FC) over a wide frequency range. It leverages modal interactions between electrical and mechanical resonators in electrostatic NEMS operating in air to provide a simple architecture for FC generators. A biased voltage signal drives the electrical resonator at resonance which is set to match an integer submultiple of twice the mechanical resonator's resonance. Experimental results demonstrate that the NEMS displacement exhibit more than 150 equidistant peaks in the case of a 2:1 modal interaction and more than 60 equidistant peaks in the case of a 1:1 modal interaction. In both cases, the Free Spectral Range (FSR) was equal to the mechanical resonance frequency. Comparison between the FCs generated by the 2:1 and 1:1 modal interactions demonstrate the superiority of the former in terms of bandwidth and stability. The superior phase coherence of the FC generated via the 2:1 modal interaction was demonstrated via time-domain analysis. Our technique has the flexibility to generate multiple frequency combs and to fine-tune their FSR depending on the number of mechanical modes accessible to and the order of the activated modal interaction. It can be integrated into portable devices and is well aligned with modern miniaturization technology.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"8"},"PeriodicalIF":7.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11735631/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Component library creation and pixel array generation with micromilled droplet microfluidics. 基于微磨液滴微流体的元件库创建和像素阵列生成。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-14 DOI: 10.1038/s41378-024-00839-6

David McIntyre, Diana Arguijo, Kaede Kawata, Douglas Densmore

{"title":"Component library creation and pixel array generation with micromilled droplet microfluidics.","authors":"David McIntyre, Diana Arguijo, Kaede Kawata, Douglas Densmore","doi":"10.1038/s41378-024-00839-6","DOIUrl":"10.1038/s41378-024-00839-6","url":null,"abstract":"Droplet microfluidics enable high-throughput screening, sequencing, and formulation of biological and chemical systems at the microscale. Such devices are generally fabricated in a soft polymer such as polydimethylsiloxane (PDMS). However, developing design masks for PDMS devices can be a slow and expensive process, requiring an internal cleanroom facility or using an external vendor. Here, we present the first complete droplet-based component library using low-cost rapid prototyping and electrode integration. This fabrication method for droplet microfluidic devices costs less than $12 per device and a full design-build-test cycle can be completed within a day. Discrete microfluidic components for droplet generation, re-injection, picoinjection, anchoring, fluorescence sensing, and sorting were built and characterized. These devices are biocompatible, low-cost, and high-throughput. To show its ability to perform multistep workflows, these components were used to assemble droplet \"pixel\" arrays, where droplets were generated, sensed, sorted, and anchored onto a grid to produce images.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"6"},"PeriodicalIF":7.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11733136/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Large-scale high uniform optoelectronic synapses array for artificial visual neural network. 用于人工视觉神经网络的大规模高均匀光电突触阵列。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-13 DOI: 10.1038/s41378-024-00859-2

Fanqing Zhang, Chunyang Li, Zhicheng Chen, Haiqiu Tan, Zhongyi Li, Chengzhai Lv, Shuai Xiao, Lining Wu, Jing Zhao

{"title":"Large-scale high uniform optoelectronic synapses array for artificial visual neural network.","authors":"Fanqing Zhang, Chunyang Li, Zhicheng Chen, Haiqiu Tan, Zhongyi Li, Chengzhai Lv, Shuai Xiao, Lining Wu, Jing Zhao","doi":"10.1038/s41378-024-00859-2","DOIUrl":"10.1038/s41378-024-00859-2","url":null,"abstract":"Recently, the biologically inspired intelligent artificial visual neural system has aroused enormous interest. However, there are still significant obstacles in pursuing large-scale parallel and efficient visual memory and recognition. In this study, we demonstrate a 28 × 28 synaptic devices array for the artificial visual neuromorphic system, within the size of 0.7 × 0.7 cm2, which integrates sensing, memory, and processing functions. The highly uniform floating-gate synaptic transistors array were constructed by the wafer-scale grown monolayer molybdenum disulfide with Au nanoparticles (NPs) acting as the electrons capture layers. Various synaptic plasticity behaviors have been achieved owing to the switchable electronic storage performance. The excellent optical/electrical coordination capabilities were implemented by paralleled processing both the optical and electrical signals the synaptic array of 784 devices, enabling to realize the badges and letters writing and erasing process. Finally, the established artificial visual convolutional neural network (CNN) through optical/electrical signal modulation can reach the high digit recognition accuracy of 96.5%. Therefore, our results provide a feasible route for future large-scale integrated artificial visual neuromorphic system.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"5"},"PeriodicalIF":7.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731047/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142979110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Microfluidic platforms for monitoring cardiomyocyte electromechanical activity. 监测心肌细胞机电活动的微流控平台。

IF 7.3 1区工程技术

Microsystems & Nanoengineering Pub Date : 2025-01-09 DOI: 10.1038/s41378-024-00751-z

Wei Wang, Weiguang Su, Junlei Han, Wei Song, Xinyu Li, Chonghai Xu, Yu Sun, Li Wang

{"title":"Microfluidic platforms for monitoring cardiomyocyte electromechanical activity.","authors":"Wei Wang, Weiguang Su, Junlei Han, Wei Song, Xinyu Li, Chonghai Xu, Yu Sun, Li Wang","doi":"10.1038/s41378-024-00751-z","DOIUrl":"10.1038/s41378-024-00751-z","url":null,"abstract":"Cardiovascular diseases account for ~40% of global deaths annually. This situation has revealed the urgent need for the investigation and development of corresponding drugs for pathogenesis due to the complexity of research methods and detection techniques. An in vitro cardiomyocyte model is commonly used for cardiac drug screening and disease modeling since it can respond to microphysiological environmental variations through mechanoelectric feedback. Microfluidic platforms are capable of accurate fluid control and integration with analysis and detection techniques. Therefore, various microfluidic platforms (i.e., heart-on-a-chip) have been applied for the reconstruction of the physiological environment and detection of signals from cardiomyocytes. They have demonstrated advantages in mimicking the cardiovascular structure and function in vitro and in monitoring electromechanical signals. This review presents a summary of the methods and technologies used to monitor the contractility and electrophysiological signals of cardiomyocytes within microfluidic platforms. Then, applications in common cardiac drug screening and cardiovascular disease modeling are presented, followed by design strategies for enhancing physiology studies. Finally, we discuss prospects in the tissue engineering and sensing techniques of microfluidic platforms.","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"4"},"PeriodicalIF":7.3,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11718118/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142951397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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