2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)最新文献

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UV-LED Lithography System and Characterization UV-LED光刻系统及其特性
Sabera Fahmida Shiba, J. Beavers, D. Laramore, Bo Lindstrom, James Brovles, Corey Gaither, Tyler Hieber, J. Kim
{"title":"UV-LED Lithography System and Characterization","authors":"Sabera Fahmida Shiba, J. Beavers, D. Laramore, Bo Lindstrom, James Brovles, Corey Gaither, Tyler Hieber, J. Kim","doi":"10.1109/NEMS50311.2020.9265607","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265607","url":null,"abstract":"This paper presents a design, system setup, characterization, and microfabrication of high-intensity UV-LED microlithography. Since the high enough intensity of the UV light enables even a millimeter thick SU-8 photoresist process, an array of high-intensity UV-LEDs has been optimized as a light source of the microlithography system. A simple waveguide with a single optical lens has made light collimation without high attenuation of the light intensity while the rotation of the light source provides uniform light distribution. Adopting the x-y-z-r stage to the light source enables a mask aligning function together with light intensity and exposure time controllers. The maximum intensity of 448 mW/cm2 has been measured and the light collimation has been achieved within 5°. The uniform light distribution was measured without and with light rotation. The rotating light source resulted in approximately 29% better than the no-rotation case. The LED source has been stable over 100 hours of operation. The test microstructures include 3 μm lines, high-aspect-ratio micropillars, and 2-mm tall SU-8 pillar array. The proposed system has great flexibility and versatility as a mask aligner system that can be used as both conventional and MEMS microfabrication.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"11 1","pages":"73-76"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86491055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Self-Powered Vehicle Speed Sensor based on an Inertial Rotary Electromagnetic Energy Harvester 基于惯性旋转电磁能量采集器的自供电车辆速度传感器
Yifan Wang, Xiangtian Dai, Anxin Luo, Fei Wang
{"title":"A Self-Powered Vehicle Speed Sensor based on an Inertial Rotary Electromagnetic Energy Harvester","authors":"Yifan Wang, Xiangtian Dai, Anxin Luo, Fei Wang","doi":"10.1109/NEMS50311.2020.9265523","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265523","url":null,"abstract":"A self-powered vehicle speed sensor based on an inertial rotary electromagnetic energy harvester is proposed. We have designed a unique container to protect the device in the experiment and transfer the pressure to the device. The maximum voltage, the power output and the total generated energy we get can be up to 9.8 V, 1.34 mW and 22.5 mJ with the loading resistance of 10 MΩ when the vehicle speed is 26 km/h. The speed of the vehicle can be detected accurately with a range of maximum 30 km/h. The energy harvested from the device is promised to be used to support an external low power consumption circuit for signal detection.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"10 1","pages":"472-476"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85226775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance Evaluation Of Via-free Non-spiral Planar Microcoils 无过孔非螺旋平面微线圈的性能评价
S. Krishnapriya, R. Komaragiri, J. SujaK.
{"title":"Performance Evaluation Of Via-free Non-spiral Planar Microcoils","authors":"S. Krishnapriya, R. Komaragiri, J. SujaK.","doi":"10.1109/NEMS50311.2020.9265635","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265635","url":null,"abstract":"Planar microcoils are essential components in magnetic biosensors for the detection of magnetic micro or nanoparticles. The particles are surface-functionalized to recognize specific molecular targets. Various nonspiral planar coil geometries are analyzed in this work to select the most suitable geometry for biosensing applications. Nonspiral planar coils have the advantage of the easier fabrication process and lower coil parasitics than that of its spiral counterparts. The microcoils are fabricated using a single mask level lithography and characterized to extract the electrical parameters of the microcoil. The results suggest that the circular geometry possesses the lowest series coil resistance and a uniform magnetic field distribution along the coil turns suitable for biosensing applications among the various nonspiral planar microcoils under consideration.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"22 1","pages":"247-250"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89639755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and Analysis of a Band Pass Setback Arming Mechanism in MEMS Safety and Arming Device MEMS安全防护装置中带通挫折防护机构的设计与分析
Hengbo Zhu, Yun Cao, Z. Xi, W. Nie
{"title":"Design and Analysis of a Band Pass Setback Arming Mechanism in MEMS Safety and Arming Device","authors":"Hengbo Zhu, Yun Cao, Z. Xi, W. Nie","doi":"10.1109/NEMS50311.2020.9265564","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265564","url":null,"abstract":"In this paper, a band pass setback arming mechanism of the MEMS Safety and Arming Device (SAD) is proposed. It is used to lock the movement of the U-shape electro-thermal actuator until arming conditions have been met and is capable of dual threshold (acceleration amplitude and pulse width) recognition. The recognition boundary has been determined, and only if the mechanism acted by load within the recognition boundary, can the latch be locked and the U-shape electro-thermal actuator be released. Mathematic model has been established according to the structural dynamics theory and the Castigliano’s second theorem. The numerical solution has been calculated, and the band pass effect has been demonstrated. Finite element model has been established and the recognition boundary of simulation results match quite well with that of theoretical results.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"37 1","pages":"213-216"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81114892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic tweezers manipulate DNA slowdown based on nanopores 磁性镊子根据纳米孔操纵DNA减速
Gang Wang, Haisong Sun, Fan Luo, Chang Chen, Jingjie Sha
{"title":"Magnetic tweezers manipulate DNA slowdown based on nanopores","authors":"Gang Wang, Haisong Sun, Fan Luo, Chang Chen, Jingjie Sha","doi":"10.1109/NEMS50311.2020.9265589","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265589","url":null,"abstract":"As a nano-sensor, solid-state nanopores have demonstrated their high sensitivity in the field of rapid detection of single molecules, but they still face many challenges in distinguishing the internal bases of DNA. Driven by voltage, the speed of DNA passing through the nanopore is very fast. When the voltage is 200mv, the via speed of DNA reaches 30base/us. At such a speed, the current change caused by a single base is difficult to be used by existing instruments. catch. Effectively reducing the speed of DNA through nanopores has become a major challenge. In this paper, the magnetic tweezers system platform was designed and constructed; the biobeads-streptavidin was connected between the magnetic beads and DNA, and the influence of the bias voltage on the structure of the magnetic beads-DNA was studied; the magnetic beads were manipulated using the magnetic tweezers system , Actively control DNA to reverse through nanopores, significantly reducing the speed of DNA passing through solid nanopores, and achieving active control of the speed of DNA passing through solid nanopores; solving key technical problems in detecting single bases in solid nanopores Provides ideas.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"28 1","pages":"342-347"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73063922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DropPNA-GO: A Single-cell Uropathogen Sensor Based on PNA Probes and Graphene Oxide in Picoliter Droplets DropPNA-GO:基于PNA探针和皮升液滴氧化石墨烯的单细胞尿路病原体传感器
Pengfei Zhang, Aniruddha M. Kaushik, K. Hsieh, Tza-Huei Wang
{"title":"DropPNA-GO: A Single-cell Uropathogen Sensor Based on PNA Probes and Graphene Oxide in Picoliter Droplets","authors":"Pengfei Zhang, Aniruddha M. Kaushik, K. Hsieh, Tza-Huei Wang","doi":"10.1109/NEMS50311.2020.9265521","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265521","url":null,"abstract":"Rapid, sensitive, and specific methods for pathogen detection and phenotypic antibiotic susceptibility testing (ID/AST) are essential for combating the rise and spread of antimicrobial resistance. Towards this end, peptide nucleic acid (PNA) probes have been used for hybridization-based detection with enhanced sensitivity and specificity. At the same time, graphene oxide (GO) has been shown as a robust quencher for PNA probes with improved sensitivity and minimal cost. Here we report a novel PNA-GO biosensor, which uses GO as a universal quencher for PNA probe-based amplification-free pathogen ID and quantification in 32 min by means of a droplet microfluidic platform (dropPNA-GO). We have optimized GO concentration to maximize sensitivity. We show the dropPNA-GO biosensor enables specific pathogen ID and quantification across 4 orders of magnitude in picoliter droplets. With apparent advantages in simplicity and cost, we foresee further expansion of our dropPNA-GO biosensor for rapid and multiplexed ID/AST applications.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"2 1","pages":"537-540"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75235659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of the Next Generation Microshutter Arrays for Space Telescope Applications 用于空间望远镜的新一代微快门阵列的研制
Meng-Ping Chang, R. Brekosky, Ari D. Brown, N. Costen, M. Greenhouse, G. Hu, Kyowon Kim, C. Kotecki, A. Kutyrev, Mary J. Li, S. McCandliss, Frederick H. Wang, E. Aguayo
{"title":"Development of the Next Generation Microshutter Arrays for Space Telescope Applications","authors":"Meng-Ping Chang, R. Brekosky, Ari D. Brown, N. Costen, M. Greenhouse, G. Hu, Kyowon Kim, C. Kotecki, A. Kutyrev, Mary J. Li, S. McCandliss, Frederick H. Wang, E. Aguayo","doi":"10.1109/NEMS50311.2020.9265604","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265604","url":null,"abstract":"We present the first space flight use of the electrostatically actuated Next Generation MicroShutter Array systems (NGMSA) as multiple celestial object selectors developed for NASA space telescope missions at the NASA Goddard Space Flight Center. The NGMSA assembly was installed in the Next Generation Far-ultraviolet Off Rowland-circle Telescope for Imaging and Spectroscopy (NG-FORTIS) and successfully launched recently from the White Sands Missile Range in October 2019. We started to investigate this electrostatic NGMSA technology at the late stages of James Webb Space Telescope (JWST) in 2009 to strategically align with requirements of larger field of view for future telescopes in space. The NGMSA in NG-FORTIS is a 128 X 64 programable 2-D addressing microfabricated shutter array while the current NGMSA system under development is a 736 X 384 large format. The new microshutter array (MSA) features several unique designs aiming at performance improvements: electrostatic actuation, thinned microshutters, better electrical wall insulation and anti-stiction surface coating. To ensure reliable operation in the space environment, NGMSA systems have passed a series of critical environment tests including acoustic, random vibration, life cycle of operation, thermal cycling, and optical contrast tests. The successful launch of the NG-FORTIS sounding rocket equipped with NGMSA demonstrates our NGMSA technology have achieved the highest NASA Technical Readiness Level 9 for sounding rocket space applications.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"121 1","pages":"89-92"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75177270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Molecular Dynamics Simulation for Protein Unfolding 蛋白质展开的分子动力学模拟
Meng Yu, Wei Si, Jingjie Sha
{"title":"Molecular Dynamics Simulation for Protein Unfolding","authors":"Meng Yu, Wei Si, Jingjie Sha","doi":"10.1109/NEMS50311.2020.9265552","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265552","url":null,"abstract":"Protein folding research has always been a significant research topic in biological sciences. However, due to the diversity of protein structures and the unpredictability of folding pathways, the folding mechanism of the natural structure of proteins have not been clearly explained. In this work, ubiquitin is used as the research object to analyze the process of protein unfolding through molecular dynamics (MD) simulation. The aim to do protein unfolding is to enlighten the research on the issue about protein folding mechanism in reverse. Our simulation reveals the order of secondary structures to unfolding and the segmentation in the unfolding process. The results can confirm the difference in stability between various secondary structures. After that, the changes in the number of hydrogen bonds and energy during the unfolding process are focused on. It indicates that both of them also have the same step phenomenon. It is presumed that the protein folding may have the similar step phenomenon. It is hopeful for the results obtained from protein unfolding to guide and inspire protein folding mechanisms.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"10 1","pages":"382-386"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73688155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The effect of substrate on the tribological properties of graphene 衬底对石墨烯摩擦学性能的影响
Xin Feng, Lingling Li, Zhiyong Wei
{"title":"The effect of substrate on the tribological properties of graphene","authors":"Xin Feng, Lingling Li, Zhiyong Wei","doi":"10.1109/NEMS50311.2020.9265622","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265622","url":null,"abstract":"The tribological properties of graphene on different substrates, such as SiO2, bulk-like MoS2, graphite and PDMS, was studied by atomic force microscopy (AFM) to establish the relationship between tribological properties and interfacial interactions. The result showed that the mechanically exfoliated graphene has low friction on an atomic flat substrate, such as graphite and bulk MoS2. Moreover, graphene on a soft elastic substrate, such as PDMS will show much higher friction force than that on hard SiO2. Besides, the SiO2 substrate with the plasma treatment can efficiently reduce the friction force of graphene. The friction measurements showed that adhesive attraction between graphene and underlying surface is particularly significant to the tribological properties of graphene. This result can be used for the fabrication of 2D material device with reliable and high performance since the interaction between 2D materials and underlying surface can be modulated by adjusting the topography of both surfaces.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"102 1","pages":"377-381"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85200325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
2 x 3 Arrayed CMOS Capacitive Biosensors for Detection of microRNAs on a Microfluidic System 2 × 3阵列CMOS电容式生物传感器用于微流体系统上的微小rna检测
Yu-Husan Kuo, Chi-Chien Huang, Yi-Sin Chen, Po-Chiun Huang, Gwo-Bin Lee
{"title":"2 x 3 Arrayed CMOS Capacitive Biosensors for Detection of microRNAs on a Microfluidic System","authors":"Yu-Husan Kuo, Chi-Chien Huang, Yi-Sin Chen, Po-Chiun Huang, Gwo-Bin Lee","doi":"10.1109/NEMS50311.2020.9265636","DOIUrl":"https://doi.org/10.1109/NEMS50311.2020.9265636","url":null,"abstract":"Breast cancer is one of the most important cancers among women worldwide. Since breast cancer is prone to metastasis and recurrence, mortality is relatively high if not diagnosed early. Therefore, it is important to develop a device that can quickly and accurately diagnose breast cancer. Recently, microRNAs such as microRNA-195 and microRNA-126 have been reported to act as biomarkers for breast cancer diagnosis. Therefore, this study reported an integrated microfluidic system capable of extracting microRNAs by microfluidic techniques, detecting and quantifying microRNAs by using complementary-metal-oxide-semiconductor (CMOS) capacitive biosensors for rapid and accurate diagnosis of breast cancer. Monolithic sensor with integrated-circuits reduces parasitic effects and submicron interdigitated microelectrodes as sensing interfaces significantly improves sensitivity. microRNA-195 detection for concentrations ranging from 1 fM to 10 pM could be successfully obtained, allowing detection in physiological conditions for cancer patients in the near future.","PeriodicalId":6787,"journal":{"name":"2020 IEEE 15th International Conference on Nano/Micro Engineered and Molecular System (NEMS)","volume":"162 1","pages":"541-544"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80237834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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