International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)最新文献_第10页

Magneto-optical isolation and topological edge states at singular points in plasmonic structures 磁光隔离和等离子体结构奇异点的拓扑边缘态

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2633235

G. Veronis, Yin Huang, Yuecheng Shen, Vahid Foroughi Nezhad, Chenglong You

引用次数: 0

Classification between early onset Alzheimer's disease and frontotemporal dementia using a single neuroimaging feature 使用单一神经影像学特征对早发性阿尔茨海默病和额颞叶痴呆进行分类

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2632990

Agnès Pérez-Millan, Laia Borrell, José Contador, M. Balasa, A. Lladó, R. Sánchez-Valle, R. Sala‐Llonch

{"title":"Classification between early onset Alzheimer's disease and frontotemporal dementia using a single neuroimaging feature","authors":"Agnès Pérez-Millan, Laia Borrell, José Contador, M. Balasa, A. Lladó, R. Sánchez-Valle, R. Sala‐Llonch","doi":"10.1117/12.2632990","DOIUrl":"https://doi.org/10.1117/12.2632990","url":null,"abstract":"INTRODUCTION: Early Onset Alzheimer’s Disease (EOAD, <65 years) and Frontotemporal Dementia (FTD) are common forms of early-onset dementia. Therefore, there is a need to establish accurate diagnosis and to obtain markers for disease tracking. We combined supervised and unsupervised machine learning (ML) to discriminate between EOAD and FTD patients. METHODS: We included 3T-T1 MRI of 203 subjects under 65 years old: 66 healthy controls (CTR, age: 55.0 ± 8.4 years), 85 EOAD patients (age: 57.3 ± 6.1 years) and 52 FTD patients (age: 57.9 ± 4.8 years). We obtained subcortical gray matter volumes and cortical thickness (CTh) regional measures using FreeSurfer. For ML, we performed a Principal Component Analysis (PCA) of all volumes and CTh values. Then, the first principal component (PC) was introduced into a Support Vector Machine (SVM). Overall performance was assessed using k-fold cross-validation. RESULTS: Our algorithm had an accuracy of 87.2 ± 14.2 % in the CTR vs EOAD classification, 80.8 ± 20.4% for CTR vs FTD, 66.5 ± 12.9 % for EOAD vs FTD and 65.2 ± 10.6% when discriminating the three groups. We used the weights of the first PC to create disease-specific patterns. CONCLUSION: By using a single feature that combines information from CTh and subcortical volumes, our algorithm classifies CTR, EOAD and FTD with good accuracy. We suggest that this approach can be used as a feature reduction strategy in ML algorithms while providing interpretable atrophy patterns.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"71 1","pages":"122040D - 122040D-8"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84139284","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

A method for modifying the surface properties of ZnO nanowires deposited as thin films on various substrates 一种改变ZnO纳米线在不同基底上薄膜表面特性的方法

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2633401

V. Kolbjonoks, Vladimirs Kostjukevičs

引用次数: 0

Development of a fiber-based microfluidic flow cytometry platform using viscoelastic fluids for polydisperse particle suspensions 纤维微流控流式细胞仪平台的开发，粘弹性流体用于多分散颗粒悬浮液

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2633628

M. Serhatlioglu, Emil Alstrup Jensen, M. Niora, A. T. Hansen, Christian Friberg Nielsen, Michelle Maria Theresia Jansman, L. Hosta‐Rigau, M. Dziegiel, K. Berg-Sørensen, I. Hickson, A. Kristensen

{"title":"Development of a fiber-based microfluidic flow cytometry platform using viscoelastic fluids for polydisperse particle suspensions","authors":"M. Serhatlioglu, Emil Alstrup Jensen, M. Niora, A. T. Hansen, Christian Friberg Nielsen, Michelle Maria Theresia Jansman, L. Hosta‐Rigau, M. Dziegiel, K. Berg-Sørensen, I. Hickson, A. Kristensen","doi":"10.1117/12.2633628","DOIUrl":"https://doi.org/10.1117/12.2633628","url":null,"abstract":"Flow cytometry (FC) is a pivotal tool for studying the physical and chemical properties of particles. State-of-the-art FC systems are highly advanced, yet they are expensive, bulky, and require high sample volume, qualified operators, and periodic maintenance. The manipulation of particles suspended in viscoelastic fluids has received increasing attention, especially for miniaturized flow cytometry technologies. This study presents a miniaturized optical capillary FC device using the viscoelastic focusing technique. A straight, one inlet/outlet microcapillary device is precisely aligned to a fiber-coupled laser source and detectors. Forward scattered, side scattered, and fluorescently emitted light signals are collected and analyzed in a real-time environment. The developed platform fits onto an inverted microscope stage enabling real-time microscopy imaging of the particles of interest together with the flow cytometry analysis. We achieved stable viscoelastic focusing and performed FC measurements for rigid polystyrene beads (diameters: 2 – 15 μm), non-spherical human erythrocytes, and canonical shape metaphase human chromosomes. We performed cytometry measurements with a throughput of 100 events/s yielding a coefficient of variation of 2%. This newly developed FC device is a versatile tool and can be operated with any inverted microscope to get the mutual benefits of optical and imaging FC measurements. Furthermore, it is possible to extend these benefits by adding more back-end tools, such as optical trapping and Raman spectroscopy.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"24 1","pages":"1219802 - 1219802-8"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78447556","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

High emissive contrast of patterned tungsten-doped VO2 thin film composites 图案化掺杂钨氧化钨薄膜复合材料的高发射对比度

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2632385

G. Hunt, J. Miragliotta, L. Oh, J. Ginn, A. Warren, D. Shrekenhamer

{"title":"High emissive contrast of patterned tungsten-doped VO2 thin film composites","authors":"G. Hunt, J. Miragliotta, L. Oh, J. Ginn, A. Warren, D. Shrekenhamer","doi":"10.1117/12.2632385","DOIUrl":"https://doi.org/10.1117/12.2632385","url":null,"abstract":"Thermal regulation is essential for numerous applications across multiple industries such as the efficient temperature control of indoor facilities and the reliable operation of many electronic systems. Vanadium dioxide (VO2) is a phase change material that is well-suited for thermal regulation as a result of its ultrafast, reversible, solid-state transition at 68°C that produces a significant contrast in its infrared (IR) emissive properties. To meet application demands, VO2’s transition temperature can be tuned via doping with a reduction in temperature of ~22 °C per atomic percent tungsten (at. % W6+). However, historically this decrease in the transition temperature has coincided with a reduction in IR optical contrast between the two phases. In this investigation, we demonstrate that by patterning VO2 thin film composites with preoptimized thicknesses, a thermal regulation system with a tunable transition temperature and no significant degradation of contrast between the states is produced. Through carefully selected user-defined patterning of the undoped VO2 layer within the multilayer film, a 64% operating optical contrast was achieved across the 8 – 13 μm spectral region as compared to 42% in the as-deposited film. Additionally, at a doping level of 1.7%, the transition temperature in a VO2 thin film composite with micron-scaled patterning was reduced to 25°C while maintaining 58% emissive contrast in the 8 – 13 μm spectral region.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"21 1","pages":"1219505 - 1219505-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82818603","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

Waveguide-coupled plasmonic nanogap-integrated phase change metasurfaces 波导耦合等离子体纳米隙集成相变超表面

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2633266

Ahmed H. Elfarash, A. Mandal, B. Gholipour

{"title":"Waveguide-coupled plasmonic nanogap-integrated phase change metasurfaces","authors":"Ahmed H. Elfarash, A. Mandal, B. Gholipour","doi":"10.1117/12.2633266","DOIUrl":"https://doi.org/10.1117/12.2633266","url":null,"abstract":"Silicon photonics has emerged as the dominant technology platform for short distance, inter-chip communication for a variety of photonic computing and sensing applications due to its efficiency in modulation and confinement of light across telecom frequencies in addition to its inherent CMOS compatibility. The integration of metallic nanogaps within silicon photonic architectures provides a promising route for scaling this platform through the extreme confinement offered by plasmonics while providing an efficient route to interfacing future photonic integrated circuits with electronics. However, fabricating the gap sizes (< λg/10) required of plasmonic resonating nanogaps for efficient operation across telecommunication frequencies is highly challenging. Efficient coupling from waveguides to plasmonic nanogaps also remains a major source of loss. Here, we show that the key to merging these platforms lies in applying metamaterial/metasurface engineering principles to the design of the nanogap. Over the last decade, metamaterials and metasurfaces have emerged as a versatile toolkit for control and enhancement of light-matter interaction at application-driven wavelengths of interest in nanophotonic device platforms. We show that integrating a metagrating within a waveguide-coupled plasmonic nanogap made from Au, can enhance coupling to and from the silicon waveguides. Furthermore, the incorporation of the metasurface within the gap allows resonant response to be maintained at user-specified wavelength of interest with gaps as large as λg/5, drastically easing fabrication. Finally, we show that by incorporating a reconfigurable phase change chalcogenide alloy into the gap, non-volatile signal switching with modulation contrasts of up to 10:1 can be achieved across telecom frequencies.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"175 1","pages":"1219608 - 1219608-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82973452","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

Direct detection of cell membrane slope fluctuations upon adding Latrunculin B using optical tweezers and single probe particle 使用光镊和单探针颗粒直接检测加入拉曲库林B后细胞膜斜率波动

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2626451

S. Roy, Snigdhadev Chakraborty, Lokesh Muruga, Rahul Vaippuly, Vandana Yadav, S. Bajpai, Privitha Edwina, Basudev Roy

{"title":"Direct detection of cell membrane slope fluctuations upon adding Latrunculin B using optical tweezers and single probe particle","authors":"S. Roy, Snigdhadev Chakraborty, Lokesh Muruga, Rahul Vaippuly, Vandana Yadav, S. Bajpai, Privitha Edwina, Basudev Roy","doi":"10.1117/12.2626451","DOIUrl":"https://doi.org/10.1117/12.2626451","url":null,"abstract":"The cell membrane has fluctuations due to thermal and athermal sources. That causes the membrane to flicker. Conventionally, only the normal (perpendicular to the membrane) fluctuations are studied and then used to ascertain the membrane properties like the bending rigidity. It is here that we introduce a different concept, namely the slope fluctuations of the cell membrane which can be modelled as a gradient of the normal fluctuations. This can be studied using a new technique where a birefringent particle placed on the membrane turns in the out of plane sense, called the pitch sense. We introduce the pitch detection technique in optical tweezers relying upon asymmetric scattering from a birefringent particle under crossed polarizers. We then go on to use this pitch detection technique to ascertain the power spectral density of membrane slope fluctuations and find it to be (frequency)−1 while the normal fluctuations yields (frequency)−5/3. We also explore a different regime where the cell is applied with the drug Latrunculin-B which inhibits actin polymerization and find the effect on membrane fluctuations. We find that even as the normal fluctuations now become (frequency)−4/3, the slope fluctuations spectrum still remains (frequency)−1, with exactly the same coefficient as the case when the drug was not applied. Thus, this presents a convenient opportunity to study the membrane parameters like bending rigidity as a function of time after applying the drug. This would be the first time the membrane bending rigidity could be studied as a function of time upon the application of Lat-B without reverting to AFM.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"63 1","pages":"121980J - 121980J-9"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83477854","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

New phase change materials for active photonics 新型有源光子学相变材料

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2631038

Cosmin Constantin-Popescu, M. Shalaginov, F. Yang, Hung-I Lin, S. An, Christopher M. Roberts, P. Miller, M. Kang, K. Richardson, Hualiang Zhang, C. Rivero‐Baleine, Hyun Jung Kim, T. Gu, S. Vitale, Juejun Hu

{"title":"New phase change materials for active photonics","authors":"Cosmin Constantin-Popescu, M. Shalaginov, F. Yang, Hung-I Lin, S. An, Christopher M. Roberts, P. Miller, M. Kang, K. Richardson, Hualiang Zhang, C. Rivero‐Baleine, Hyun Jung Kim, T. Gu, S. Vitale, Juejun Hu","doi":"10.1117/12.2631038","DOIUrl":"https://doi.org/10.1117/12.2631038","url":null,"abstract":"Phase change materials or PCMs are truly remarkable compounds whose unique switchable properties have fueled an explosion of emerging applications in electronics and photonics. Nonetheless, if we discount their use in optical discs, PCMs’ immense application potential in photonics beyond data recording has only begun to unfold in the past decade. While the material requirements for optical or electronic data storage have been succinctly summarized as five key elements “writability, archival storage, erasability, readability, and cyclability” decades ago, these requirements are not universally relevant to the diverse set of photonic applications now being explored. It also comes as no surprise that existing PCMs, which have been heavily vetted for data storage, are not necessarily the optimal compositions for different use cases in optics and photonics. PCMs with their attributes custom-tailored for specific applications are therefore in demand as phase-change photonics continue to expand. Here we discuss the PCM selection and design strategies specifically for photonic applications as well as our recent work developing active integrated photonic devices and meta-surface optics based on new PCMs tailored for photonics.","PeriodicalId":13820,"journal":{"name":"International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)","volume":"215 1","pages":"1219606 - 1219606-12"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83616343","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

Charge-density-wave phase transitions in quasi-2D 1T-TaS2/h-BN heterostructure devices 准二维1T-TaS2/h-BN异质结构器件中的电荷密度波相变

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2637881

Jonas O. Brown, M. Taheri, Nick R. Sesing, T. Salguero, F. Kargar, A. Balandin

引用次数: 0

Nonlinear effects in modeling thin-film graded-bandgap solar cells 薄膜梯度带隙太阳能电池模型中的非线性效应

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011) Pub Date : 2022-10-03 DOI: 10.1117/12.2632264

Faiz Ahmad, B. Civiletti, A. Lakhtakia, P. Monk

引用次数: 0