In this work, we have synthesized Ag-Graphene Nanocompostie (AGN) by a simple method under mild condition. Further, Composites of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) participated by AGN have been studied. The interaction and photoluminescence quenching of MEH-PPV/AGN composites have been observed using UV-visible and fluorescence spectroscopy. Based on UV-visible spectrum of different concentration of AGN blending with MEH-PPV, the absorption range was markedly enlarged, indicating the formation of ground-state charge-transfer complex (CTC). Besides, photoluminescence (PL) spectra of the MEH-PPV/AGN nanocomposite show an efficient PL quenching effect. Both of these results indicate that AGN could apply in photovoltaic device as an acceptor material.
{"title":"Formation of charge-transfer complex and enlarging the absorption ability of MEH-PPV by Ag-Graphene Nanocomposite","authors":"Chenxin Ran, Minqiang Wang, Weiyin Gao, Zhi Yang, Xiangyu Zhang","doi":"10.1109/NANO.2013.6720824","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720824","url":null,"abstract":"In this work, we have synthesized Ag-Graphene Nanocompostie (AGN) by a simple method under mild condition. Further, Composites of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) participated by AGN have been studied. The interaction and photoluminescence quenching of MEH-PPV/AGN composites have been observed using UV-visible and fluorescence spectroscopy. Based on UV-visible spectrum of different concentration of AGN blending with MEH-PPV, the absorption range was markedly enlarged, indicating the formation of ground-state charge-transfer complex (CTC). Besides, photoluminescence (PL) spectra of the MEH-PPV/AGN nanocomposite show an efficient PL quenching effect. Both of these results indicate that AGN could apply in photovoltaic device as an acceptor material.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134276526","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720942
Runhuai Yang, K. Lai, Yuqiang Fang, N. Xi, Jie Yang
In this paper, the development of a nanorobotic station for acquisition of cellular electrical and mechanical information is reported. This station involves the development of a nanomanipulation platform and a planar patch-clamp module. The nanomanipulation platform not only enables the observation of biological cells, but also has the ability to give a precise pico-Newton force stimulus on a certain position of cells. The membrane potential of cells can be recorded by the patch clamp module. The module also has the ability to generate electric stimulus to the biological cells. This station provides a method to research both mechanical and electrical properties of living cells.
{"title":"Development of a nanorobotic station for electrophysiology under nanomechanical stimulation","authors":"Runhuai Yang, K. Lai, Yuqiang Fang, N. Xi, Jie Yang","doi":"10.1109/NANO.2013.6720942","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720942","url":null,"abstract":"In this paper, the development of a nanorobotic station for acquisition of cellular electrical and mechanical information is reported. This station involves the development of a nanomanipulation platform and a planar patch-clamp module. The nanomanipulation platform not only enables the observation of biological cells, but also has the ability to give a precise pico-Newton force stimulus on a certain position of cells. The membrane potential of cells can be recorded by the patch clamp module. The module also has the ability to generate electric stimulus to the biological cells. This station provides a method to research both mechanical and electrical properties of living cells.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134500795","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720984
N. Willems, U. Wejinya, Zhuxin Dong
Material reliability is among the crucial factors that impact material performances before device applications. In order to predict material reliability, accelerated aging study-a study to predict material shelf life when subjected to temperature, was performed on Silicon Nanowires. We investigated the effects of process conditions on the diameters and the quality of Si NWs using Atomic Force Microscopy. The experimental results revealed diameter of Si NWs has linear relationship with varying temperature. These results are of significant importance and will be a critical design consideration for the manufacture of Nanoelectromechanical systems involving Si NWs.
{"title":"Temperature treatment on Silicon Nanowires for reliability studies","authors":"N. Willems, U. Wejinya, Zhuxin Dong","doi":"10.1109/NANO.2013.6720984","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720984","url":null,"abstract":"Material reliability is among the crucial factors that impact material performances before device applications. In order to predict material reliability, accelerated aging study-a study to predict material shelf life when subjected to temperature, was performed on Silicon Nanowires. We investigated the effects of process conditions on the diameters and the quality of Si NWs using Atomic Force Microscopy. The experimental results revealed diameter of Si NWs has linear relationship with varying temperature. These results are of significant importance and will be a critical design consideration for the manufacture of Nanoelectromechanical systems involving Si NWs.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"2121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134542193","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720884
Yuqiang Fang, K. Lai, Catherine Y. Y. Iu, C. N. Lui, C. Fung, Hung‐Wing Li, K. Yung, N. Xi
Physiological conditions of biological samples are regulated by many different parameters including mechanical and biochemical factors etc. Single-cell studies of these parameters are challenging by using conventional bioanalysis methods. However, with the recent advancement in nanotechnology, single-molecule and single-cell analysis is much more accessible. Understanding the changes of neuroblastoma cells in different mechanisms is critical for fundamental research in neurosciences. Here, we investigate the mechanical behavior of SH-SY5Y cells using atomic force microscopy. Topographic imaging of the cells and real-time quantitative analysis of their mechanical properties will be presented in the paper.
{"title":"Investigation of N-methyl-D-aspartate induced mechanical behavior of neuroblastoma cells using atomic force microscopy","authors":"Yuqiang Fang, K. Lai, Catherine Y. Y. Iu, C. N. Lui, C. Fung, Hung‐Wing Li, K. Yung, N. Xi","doi":"10.1109/NANO.2013.6720884","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720884","url":null,"abstract":"Physiological conditions of biological samples are regulated by many different parameters including mechanical and biochemical factors etc. Single-cell studies of these parameters are challenging by using conventional bioanalysis methods. However, with the recent advancement in nanotechnology, single-molecule and single-cell analysis is much more accessible. Understanding the changes of neuroblastoma cells in different mechanisms is critical for fundamental research in neurosciences. Here, we investigate the mechanical behavior of SH-SY5Y cells using atomic force microscopy. Topographic imaging of the cells and real-time quantitative analysis of their mechanical properties will be presented in the paper.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133534107","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720927
Poying Chen, J. Jiang, Y. Cheng, M. Dai, Y. Tzeng
Three-dimensional Integrated-circuit (3DIC) needs coatings with both high thermal conductivity and high electrical insulation for isolating electronic devices and interconnects while spreading heat generated by stacked integrated circuits effectively. Single crystalline diamond possesses excellent electrical insulation and thermal conductivity, which is a perfect candidate for the need by 3DIC. However, a large-area coating of single crystalline diamond is difficult to achieve. So we use polycrystalline diamond films instead. But for polycrystalline diamond films with many grain boundaries, the severe phonon scattering and electrically conductive graphitic carbon contents in grain boundaries cause the electrical insulation and the thermal conductivity to decrease. The smaller the grain size is, usually the decrease is more severe. A good compromise is to retain the high thermal conductivity of diamond crystals while minimizing the electrical conductivity of polycrystalline diamond coatings by removing the charge-transfer doping mechanism enabled by hydrogen termination on diamond grains and minimizing graphitic carbon in the grain boundaries. This paper reports a large-area tri-layer diamond coating structure to achieve sustainable 1010 Ωcm electrical resistivity in the ambient atmosphere. A nanodiamond base layer provides a high-density diamond seeding layer for the polycrystalline diamond film to contain few voids and graphitic carbon in the grain boundaries. The second nanodiamond film is used to encapsulate the de-hydrogenated microcrystalline diamond film to prevent degradation of electrical resistance due to the ambient atmosphere.
{"title":"High-electrical-resistivity CVD diamond films with tri-layer UNCD-MCD-UNCD structures for 3DIC applications","authors":"Poying Chen, J. Jiang, Y. Cheng, M. Dai, Y. Tzeng","doi":"10.1109/NANO.2013.6720927","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720927","url":null,"abstract":"Three-dimensional Integrated-circuit (3DIC) needs coatings with both high thermal conductivity and high electrical insulation for isolating electronic devices and interconnects while spreading heat generated by stacked integrated circuits effectively. Single crystalline diamond possesses excellent electrical insulation and thermal conductivity, which is a perfect candidate for the need by 3DIC. However, a large-area coating of single crystalline diamond is difficult to achieve. So we use polycrystalline diamond films instead. But for polycrystalline diamond films with many grain boundaries, the severe phonon scattering and electrically conductive graphitic carbon contents in grain boundaries cause the electrical insulation and the thermal conductivity to decrease. The smaller the grain size is, usually the decrease is more severe. A good compromise is to retain the high thermal conductivity of diamond crystals while minimizing the electrical conductivity of polycrystalline diamond coatings by removing the charge-transfer doping mechanism enabled by hydrogen termination on diamond grains and minimizing graphitic carbon in the grain boundaries. This paper reports a large-area tri-layer diamond coating structure to achieve sustainable 1010 Ωcm electrical resistivity in the ambient atmosphere. A nanodiamond base layer provides a high-density diamond seeding layer for the polycrystalline diamond film to contain few voids and graphitic carbon in the grain boundaries. The second nanodiamond film is used to encapsulate the de-hydrogenated microcrystalline diamond film to prevent degradation of electrical resistance due to the ambient atmosphere.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115210934","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}
A novel type of thermoelectric generator device (TEGD) based on carbon nanotube (CNT) membrane is introduced to realize the self-powered function of nano/micro electromechanical systems (N/MEMS) in some special environments. The TEGD unit is composed of an n-type CNT membrane and a p-type one connected in series. When temperature gradient exists between both ends of the TEGD unit, electric potential difference will generate. The TEGD is formed through connecting several TEGD units in series to get enough electric power. In the paper, CNT membranes of the TEGD are synthesized by the chemical vapor deposition (CVD) method and the TEGD properties are researched in detail. Experimental results demonstrated that the TEGD has much use value and bright application prospect in the future.
{"title":"Thermoelectric generator device based on carbon nanotube membrane","authors":"Wenbin Huang, Guanglong Wang, Jianglei Lu, Fengqi Gao, Zhongtao Qiao, Lianfeng Sun","doi":"10.1109/NANO.2013.6721002","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721002","url":null,"abstract":"A novel type of thermoelectric generator device (TEGD) based on carbon nanotube (CNT) membrane is introduced to realize the self-powered function of nano/micro electromechanical systems (N/MEMS) in some special environments. The TEGD unit is composed of an n-type CNT membrane and a p-type one connected in series. When temperature gradient exists between both ends of the TEGD unit, electric potential difference will generate. The TEGD is formed through connecting several TEGD units in series to get enough electric power. In the paper, CNT membranes of the TEGD are synthesized by the chemical vapor deposition (CVD) method and the TEGD properties are researched in detail. Experimental results demonstrated that the TEGD has much use value and bright application prospect in the future.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115708521","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6721064
D. Li, Y. Pan, X. Zhao
Drag reduction of liquid flows on solid/liquid interface has become an important issue with the development of microfluidics systems. Theoretical and experimental studies have shown that at the solid-liquid interface the presence of nanobubbles is believed to be responsible for boundary slip, and the size, quantity and distribution of nanobubbles on hydrophobic surface will influence the slip length. In this paper, surface nanobubbles formed on Polystyrene (PS) films were imaged by atomic force microscope (AFM), and the influences of PS solution concentration adopted when spin-coating on nanobubbles were investigated.
{"title":"Influence of Polystyrene (PS) solution concentration on the formation of nanobubbles","authors":"D. Li, Y. Pan, X. Zhao","doi":"10.1109/NANO.2013.6721064","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721064","url":null,"abstract":"Drag reduction of liquid flows on solid/liquid interface has become an important issue with the development of microfluidics systems. Theoretical and experimental studies have shown that at the solid-liquid interface the presence of nanobubbles is believed to be responsible for boundary slip, and the size, quantity and distribution of nanobubbles on hydrophobic surface will influence the slip length. In this paper, surface nanobubbles formed on Polystyrene (PS) films were imaged by atomic force microscope (AFM), and the influences of PS solution concentration adopted when spin-coating on nanobubbles were investigated.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114415382","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6721038
P. Marconcini
We numerically study the transport behavior of a graphene cavity delimited by two constrictions and divided into two dots by the tunnel barrier induced by the electrostatic action of a negatively biased gate. Performing an analysis, based on an envelope function approach, of the dependence of the conductance on the position of the tunnel barrier, we observe a maximum when the barrier is at the middle of the cavity, an effect similar, even though less pronounced, to that recently studied in devices based on semiconductor heterostructures.
{"title":"Influence of symmetry on the conductance of a graphene double dot","authors":"P. Marconcini","doi":"10.1109/NANO.2013.6721038","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721038","url":null,"abstract":"We numerically study the transport behavior of a graphene cavity delimited by two constrictions and divided into two dots by the tunnel barrier induced by the electrostatic action of a negatively biased gate. Performing an analysis, based on an envelope function approach, of the dependence of the conductance on the position of the tunnel barrier, we observe a maximum when the barrier is at the middle of the cavity, an effect similar, even though less pronounced, to that recently studied in devices based on semiconductor heterostructures.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114591375","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720840
S. Farhana, A. Alam, Sheroz Khan, S. Motakabber
The geometrical structure of carbon nanotubes has been calculated and analyzed in this paper. The analysis of carbon nanotube for Pz orbital, perpendicular to the graphene sheet and thus the nanotube surface forms a delocalized π network across the nanotube, which is responsible for its electronic properties. These electronic properties are obtained from tight binding (TB) model for graphene. Furthermore, optimized DFT calculation shows the optimum chiral of CNT, which is semiconducting zigzag for SWCNT and MWCNT.
{"title":"Modeling of optimum chiral carbon nanotube using DFT","authors":"S. Farhana, A. Alam, Sheroz Khan, S. Motakabber","doi":"10.1109/NANO.2013.6720840","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720840","url":null,"abstract":"The geometrical structure of carbon nanotubes has been calculated and analyzed in this paper. The analysis of carbon nanotube for Pz orbital, perpendicular to the graphene sheet and thus the nanotube surface forms a delocalized π network across the nanotube, which is responsible for its electronic properties. These electronic properties are obtained from tight binding (TB) model for graphene. Furthermore, optimized DFT calculation shows the optimum chiral of CNT, which is semiconducting zigzag for SWCNT and MWCNT.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117325370","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}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720792
T. S. van den Heever, W. Perold, G. L. Hardie
A nanogenerator is developed using zinc oxide (ZnO) nanowires. Design of experiments is used to optimise the growth parameters of the ZnO nanowires, with an increase in output voltage set as the optimising parameter. After the optimisation of the nanowire growth, focus is shifted to the optimisation of the manufacturing of the nanogenerator. The nanowires are plasma treated and annealed right after growth, both methods increasing the output voltage. The last step in manufacturing is adding PMMA for stability and durability. Various materials are dispersed in the PMMA to further enhance the output voltage. Single walled carbon nanotubes and ZnO nanowires gave the biggest increase in output voltage. A nanogenerator manufactured with a combination of these optimisation techniques resulted in an output voltage of over 5 V, a ten-fold increase of output voltage.
{"title":"Development and optimisation of a zinc oxide nanogenerator","authors":"T. S. van den Heever, W. Perold, G. L. Hardie","doi":"10.1109/NANO.2013.6720792","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720792","url":null,"abstract":"A nanogenerator is developed using zinc oxide (ZnO) nanowires. Design of experiments is used to optimise the growth parameters of the ZnO nanowires, with an increase in output voltage set as the optimising parameter. After the optimisation of the nanowire growth, focus is shifted to the optimisation of the manufacturing of the nanogenerator. The nanowires are plasma treated and annealed right after growth, both methods increasing the output voltage. The last step in manufacturing is adding PMMA for stability and durability. Various materials are dispersed in the PMMA to further enhance the output voltage. Single walled carbon nanotubes and ZnO nanowires gave the biggest increase in output voltage. A nanogenerator manufactured with a combination of these optimisation techniques resulted in an output voltage of over 5 V, a ten-fold increase of output voltage.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123503403","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}
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