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Synthesis and optical properties of ZnO nanowires for nanophotonics 纳米光子学用ZnO纳米线的合成及其光学性能
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697753
S. M. Kim, Gang Shen, D. Wilbert, W. Baughman, N. Dawahre, Michael M. Murphy, M. York, Jongsu Kim, P. Kung
{"title":"Synthesis and optical properties of ZnO nanowires for nanophotonics","authors":"S. M. Kim, Gang Shen, D. Wilbert, W. Baughman, N. Dawahre, Michael M. Murphy, M. York, Jongsu Kim, P. Kung","doi":"10.1109/NANO.2010.5697753","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697753","url":null,"abstract":"High quality ZnO nanowires were synthesized by chemical vapor deposition using both a catalyst-assisted vapor-liquid-solid and a catalyst-free vapor-solid deposition approach. and their optical properties studied using photoluminescence and Raman spectroscopy combined with confocal laser scanning microscopy. Strong UV near band edge along with defect related visible luminescence emissions were observed and their relative intensity compared. We report here the growth of ZnO nanowires by chemical vapor deposition using both a catalyst-assisted vapor-liquid-solid and a catalyst-free vapor-solid deposition approach. The nanowires were characterized through scanning electron microscopy, x-ray diffraction, optical absorption, micro-photoluminescence, confocal Raman spectroscopy, and Terahertz time domain spectroscopy.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133732058","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
Power generation using piezoelectric ZnO nanowires for nano-scale devices 压电ZnO纳米线用于纳米级器件的发电
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697942
S. Hur, Kyu-Hang Lee, Y. Hahn, Wandoo Kim, Hongsoo Choi
{"title":"Power generation using piezoelectric ZnO nanowires for nano-scale devices","authors":"S. Hur, Kyu-Hang Lee, Y. Hahn, Wandoo Kim, Hongsoo Choi","doi":"10.1109/NANO.2010.5697942","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697942","url":null,"abstract":"ZnO nanowires can convert mechanical energy into electrical energy and we investigated energy conversion of ZnO nanowires grown on a silicon substrate. First, we numerically studied the output voltages of ZnO nanowires while varying diameters and lengths of ZnO nanowires. Second, we measured the currents of ZnO nanowires grown at low temperature using a solution method. The currents were measured using a Current Atomic Force Microscope (I-AFM). ZnO nanowires produced output current pulses when scanned by I-AFM in contact mode because of the piezoelectric effect of ZnO nanowires when the I-AFM tip applied a lateral force to ZnO nanowires.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115521770","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
Towards robust design of hybrid CMOS-SETs using feedback architectures 基于反馈结构的混合cmos器件鲁棒设计
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5698032
Guoqing Deng, Chunhong Chen
{"title":"Towards robust design of hybrid CMOS-SETs using feedback architectures","authors":"Guoqing Deng, Chunhong Chen","doi":"10.1109/NANO.2010.5698032","DOIUrl":"https://doi.org/10.1109/NANO.2010.5698032","url":null,"abstract":"Low temperature operation and background charge fluctuation are among critical limitations for practical single-electron-tunneling (or SET) based circuits. Particularly, background charges on the island of SET devices affect the phase of Coulomb blockade oscillation, and may eventually lead to incorrect circuit operation. In order to construct robust SET circuits, we explore new design methods based on feedback architectures and novel characteristics of SET devices. We first discuss the impact of a direct feedback on circuit performance against background charges. Then, we propose a self-adapted input-referred feedback structure which can drastically reduce the sensitivity of circuit behaviors to background charge fluctuations. An improved hybrid CMOS-SET ADC circuit is also presented as an example to take advantage of the proposed feedback architecture for robustness against random background charges.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115937297","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
Policy issues in international collaboration in nanoscience and nanotechnology: Korean case 纳米科学和纳米技术国际合作中的政策问题:韩国案例
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5698042
Jungil Lee, Hanjo Lim, Hyun-Cheol Kim, Sangmi Jeong
{"title":"Policy issues in international collaboration in nanoscience and nanotechnology: Korean case","authors":"Jungil Lee, Hanjo Lim, Hyun-Cheol Kim, Sangmi Jeong","doi":"10.1109/NANO.2010.5698042","DOIUrl":"https://doi.org/10.1109/NANO.2010.5698042","url":null,"abstract":"Motivations, benefits and challenges in international scientific collaboration for nanotechnology are reviewed through literature and in particular discussions at OECD workshop held in Baraga 2009. Also introduced is the experience of Korea in international research collaboration and a policy recommendation for Korea in international collaboration for nanotechnology, which can be applied to other countries.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124354335","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
Harnessing nanotechnology to create new diagnostics and treatments for infectious disease 利用纳米技术为传染病创造新的诊断和治疗方法
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697737
D. J. Sanchez, Xianting Ding, Eric Schopf, Yang Liu, Jane C. Deng, Siyin Yang, Yong Cheng, Chih-Ming Ho, G. Cheng
{"title":"Harnessing nanotechnology to create new diagnostics and treatments for infectious disease","authors":"D. J. Sanchez, Xianting Ding, Eric Schopf, Yang Liu, Jane C. Deng, Siyin Yang, Yong Cheng, Chih-Ming Ho, G. Cheng","doi":"10.1109/NANO.2010.5697737","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697737","url":null,"abstract":"Infectious microorganisms represent the causes of many of the most common and dangerous diseases in our modern society. Two major problems exist when tackling the problem of infections: detection and treatment. Here we utilize two distinct nanotechnology platforms to combat these problems. First, we demonstrate a novel detection method for identifying Mycobacterium tuberculosis DNA using rolling circle amplification (RCA) of the pathogenic DNA. Second, we design a system for the development of antiviral drug combinations using feedback system control to rapidly determine effective antiviral drug combinations. Using Herpes Simplex Virus (HSV-1) as a model we show the effectiveness of this approach. Taken together, we have begun to develop a platform for better handling of infectious disease in the future using novel nanotechnology and nanomedicine approaches.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114809351","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
Silica nanochannel device for pH sensing based on surface charge density changes 基于表面电荷密度变化的pH传感二氧化硅纳米通道器件
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697939
Sang Young Lee, S. Y. Yoon, Kyeong-Hwan Lee, Sung Yang
{"title":"Silica nanochannel device for pH sensing based on surface charge density changes","authors":"Sang Young Lee, S. Y. Yoon, Kyeong-Hwan Lee, Sung Yang","doi":"10.1109/NANO.2010.5697939","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697939","url":null,"abstract":"This paper demonstrates a novel micro/nano fluidic device for continuous pH sensing of small fluid volumes. The working principle of the device is based on the change of the surface charge density within the silica nanochannels with respect to the pH levels of the electrolyte. In order to measure pH levels of various solutions, AC potential is applied along the silica nanochannels which have 50 nm depth, 2 µm width, and 30 µm length. The running current along the nanofluidic channels is directly measured with respect to pH levels. It was found that the running current is inversely proportional to pH levels regardless of ion concentrations.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114549607","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
Preparation and characterization of biodegradable poly (ɛ-caprolactone) -based blend nanofibers as a biomedical scaffolds 生物可降解聚己内酯基共混纳米纤维的制备与表征
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697859
R. M. Aghdam, S. Najarian, S. Emami, S. Shakhesi, S. Khanlari, K. Shabani
{"title":"Preparation and characterization of biodegradable poly (ɛ-caprolactone) -based blend nanofibers as a biomedical scaffolds","authors":"R. M. Aghdam, S. Najarian, S. Emami, S. Shakhesi, S. Khanlari, K. Shabani","doi":"10.1109/NANO.2010.5697859","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697859","url":null,"abstract":"Nanofibrous substrates of synthetic polymers including poly (ɛ-caprolactone) (PCL) have shown considerable potential in tissue regeneration. In this study, a blend nanofiber scaffold was prepared using two synthetic polymers, poly (ɛ-caprolactone) and polyglycolic acid (PGA), using the electro spinning method. In order to confirm the properties of the PCL/PGA blend nanofiber scaffold, scanning electron microscopy (SEM), attenuated total reflectance fourier-transform infrared spectroscopy (ATR-FTIR), contact angle and bio degradation test were performed. The results of the experiments showed that the PC L/PGA blend nanofibers have an average diameter of around 200 nm. Although the PCL nanofiber was hydrophobic, presence of PGA improved the water affinity significantly. An in vitro degradation study of PCL/PGA blend nanofibers was conducted in phosphate-buffered saline, pH 7.2 and it was found that the degradation rates of PCL/PGA blend nanofibers were faster than that of the pure PCL nanofibers.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114687656","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
Deposition of Sn/SnOx core-shell nanoparticles on phospholipid membrane Sn/SnOx核壳纳米颗粒在磷脂膜上的沉积
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697777
H. H. An, J. H. Kim, H. Kim, D. Kwon, J. H. Lee, C. K. Kim, C. Yoon
{"title":"Deposition of Sn/SnOx core-shell nanoparticles on phospholipid membrane","authors":"H. H. An, J. H. Kim, H. Kim, D. Kwon, J. H. Lee, C. K. Kim, C. Yoon","doi":"10.1109/NANO.2010.5697777","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697777","url":null,"abstract":"Through direct deposition of Sn on a solid-supported phospholipid membrane, a monolayer of self-assembled Sn/SnOx core-shell nanoparticles was fabricated. It was demonstrated that the phase state of the lipid membrane had strong effect on the nanoparticle formation. A flexible phospholipid (l,2-dioleoyl-sn-glycero-3-phosphoethanolamine) membrane in a liquid-crystalline state allowed the metal atoms to penetrate into the membrane and spontaneous formation of nanoparticles whereas a rigid membrane in a gel state (l,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine) retarded nucleation of the nanoparticles on the membrane surface. The proposed method can be extended to other metals and the proper choice of the lipid membrane can be potentially used to alter the resulting particle morphology.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123560090","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
Ozone based atomic layer deposition of high-K dielectrics for graphene device applications 石墨烯器件中高k介电体的臭氧原子层沉积
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697781
G. Mordi, B. Lee, S. Jandhyala, J. Kim
{"title":"Ozone based atomic layer deposition of high-K dielectrics for graphene device applications","authors":"G. Mordi, B. Lee, S. Jandhyala, J. Kim","doi":"10.1109/NANO.2010.5697781","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697781","url":null,"abstract":"The initial growth mechanism of Al203 films deposited by atomic layer deposition (ALD) using trimethylaluminum (TMA) and ozone as a precursor and an oxidant, respectively, on Highly Ordered Pyrolytic graphite (HOPG) has been investigated. Trimethylaluminum (TMA)/water ALD process has been reported to deposit Al203 along the step edges of HOPG while ozone process induce nucleation sites leading to a conformal deposition on the basal plane and step edges. Here we demonstrate a uniform and conformal Al203 deposited at 25°C from 6 cycles of (TMA)/ozone as a seed layer toward the integration of high-K dielectrics for top-gated graphene devices. Through this decoration of nucleation sites on graphene due to ozone, we investigate the mechanism of the ozone based process.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123721213","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
A study of temperature effect on vertically aligned carbon nanofibers for bio/chemical sensors development 温度对生物/化学传感器中垂直排列碳纳米纤维的影响
10th IEEE International Conference on Nanotechnology Pub Date : 2010-08-01 DOI: 10.1109/NANO.2010.5697810
S. N. S. Chalamalasetty, U. Wejinya, Zhuxin Dong
{"title":"A study of temperature effect on vertically aligned carbon nanofibers for bio/chemical sensors development","authors":"S. N. S. Chalamalasetty, U. Wejinya, Zhuxin Dong","doi":"10.1109/NANO.2010.5697810","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697810","url":null,"abstract":"One of the major limitations in the development of ultrasensitive electrochemical biosensors based on one dimensional nanostructure is the difficulty involved with reliably fabricating nanoelectrode arrays (NEAs). In this work, to ensure nanoelectrode behavior and higher sensitivity, Vertically Aligned Carbon Nano Fibers (VACNF) are precisely grown on 100 nm Ni dots with 1µm spacing on each micro pad. However, in order to examine the quality and measure the height and diameter of the VACNFs, a surface detection and measurement tool at the nanoscale level is employed. In this paper, we introduce an approach to measure these nano-scale features through Atomic Force Microscope (AFM). With this method, both the 2D and 3D images of sample surface are generated and the sizes of carbon nanofibers are obtained with statistical analysis. Furthermore, temperature effect on the dimensions of VACNFs is studied.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"61 50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117248319","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
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