Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6721015
Hongjun Song, Yi Wang, C. Garson, K. Pant
This paper presents a Nafion film based micro-nanofluidic device for concurrent DNA preconcentration and separation. The principle of the device is based on: (a) ion concentration polarization phenomenon at the junction of the microchannel and the nanochannels in the Nafion film to form opposing electrophoretic and electroosmotic forces acting on the DNAs, combined with (b) end-labeled free solution electrophoresis to vary the charge-to-mass ratio for molecular differentiation. Extensive experiments were carried out to characterize the functionality of the device. Concurrent preconcentration and separation of a DNA mixture within 240s were successfully demonstrated, yielding concentration ratios up to 1,150X and separation resolution of 1.85. The effect of applied electric field on the concentration and separation performance was investigated. The device can be used as a key sample preparation element in conjunction with micro- or nanofluidic sensors to obtained microTAS functionality.
{"title":"Nafion film based nanofluidic device for concurrent DNA preconcentration and separation","authors":"Hongjun Song, Yi Wang, C. Garson, K. Pant","doi":"10.1109/NANO.2013.6721015","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721015","url":null,"abstract":"This paper presents a Nafion film based micro-nanofluidic device for concurrent DNA preconcentration and separation. The principle of the device is based on: (a) ion concentration polarization phenomenon at the junction of the microchannel and the nanochannels in the Nafion film to form opposing electrophoretic and electroosmotic forces acting on the DNAs, combined with (b) end-labeled free solution electrophoresis to vary the charge-to-mass ratio for molecular differentiation. Extensive experiments were carried out to characterize the functionality of the device. Concurrent preconcentration and separation of a DNA mixture within 240s were successfully demonstrated, yielding concentration ratios up to 1,150X and separation resolution of 1.85. The effect of applied electric field on the concentration and separation performance was investigated. The device can be used as a key sample preparation element in conjunction with micro- or nanofluidic sensors to obtained microTAS functionality.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"1 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":"130484349","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.2013.6720898
Yuhua Yu, Jianfeng Chen, Jia Zhou
This work reported a one-step electrodeposition to fabricate a graphene nanosheets doped polypyrrole modified gold (PPy/GENS/Au) electrode at the on-chip three-electrode-system electrochemical sensor array. The PPy/GENS/Au electrode exhibited excellent electrochemical properties of large current response, good reproducibility and stability. When applied for the detection of hydrogen peroxide (H2O2), this proposed sensor carry out a rapid, direct and selective determination of H2O2 with the linear range from 1 to 10mM (R-square=0.9914) and a sensitivity of about 32 μA mM-1cm-2. The simple and low-cost construction of PPy/GENS/Au electrode shows a great promise to fabricate mass-produced nano-platform for potential application of biosensing analysis in a lab-on-a-chip system.
{"title":"Enzyme-free electroreduction of hydrogen peroxide at polypyrrole/graphene/au microelectrode based on three-electrode-system array","authors":"Yuhua Yu, Jianfeng Chen, Jia Zhou","doi":"10.1109/NANO.2013.6720898","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720898","url":null,"abstract":"This work reported a one-step electrodeposition to fabricate a graphene nanosheets doped polypyrrole modified gold (PPy/GENS/Au) electrode at the on-chip three-electrode-system electrochemical sensor array. The PPy/GENS/Au electrode exhibited excellent electrochemical properties of large current response, good reproducibility and stability. When applied for the detection of hydrogen peroxide (H2O2), this proposed sensor carry out a rapid, direct and selective determination of H2O2 with the linear range from 1 to 10mM (R-square=0.9914) and a sensitivity of about 32 μA mM-1cm-2. The simple and low-cost construction of PPy/GENS/Au electrode shows a great promise to fabricate mass-produced nano-platform for potential application of biosensing analysis in a lab-on-a-chip system.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"1 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":"130723795","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.2013.6720968
V. Swaminathan, Spandana Gannavaram, Shihui Li, Huan Hu, J. Yeom, Yong Wang, Likun Zhu
Microfluidic platforms provide elegant schemes for isolation of rare cells from the blood. Hierarchical 3-dimensional architectures with silicon nanopillar forests draw advantage of unique surface interactions with target cells to aid capture and adhesion. Microchannels with numerically optimized designs of micro post arrays maximize contact frequency with the cells in flow. We describe a scheme to fabricate ordered nanopillar forests on the sidewalls of these micro posts and functionalize them with SELEX nucleic acid aptamers. Our microfluidic platform, designed for 90% contact probability, facilitates technologies for highly selective and specific capture of circulating tumor cells.
{"title":"Microfluidic platform with hierarchical micro/nanostructures and SELEX nucleic acid aptamer coating for isolation of circulating tumor cells","authors":"V. Swaminathan, Spandana Gannavaram, Shihui Li, Huan Hu, J. Yeom, Yong Wang, Likun Zhu","doi":"10.1109/NANO.2013.6720968","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720968","url":null,"abstract":"Microfluidic platforms provide elegant schemes for isolation of rare cells from the blood. Hierarchical 3-dimensional architectures with silicon nanopillar forests draw advantage of unique surface interactions with target cells to aid capture and adhesion. Microchannels with numerically optimized designs of micro post arrays maximize contact frequency with the cells in flow. We describe a scheme to fabricate ordered nanopillar forests on the sidewalls of these micro posts and functionalize them with SELEX nucleic acid aptamers. Our microfluidic platform, designed for 90% contact probability, facilitates technologies for highly selective and specific capture of circulating tumor cells.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"25 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":"132351646","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.2013.6720835
Zhi Yang, Minqiang Wang, G. Yan, Xiangyu Zhang, Jijun Ding
In order to understand surface plasmon resonance of anisotropic metal nanocrystals, we have produced Ag nanorods with well-controlled aspect ratio by soft template method with seed-mediated. The aspect ratio of synthesized Ag nanorods can be tuned flexibly by changing the amounts of seeds. This provides a convenience for studying localized surface plasmon resonance (LSPR) properties of Ag nanorods. Based on these excellent properties, we calculated the extinction spectrum and electrical field distribution of Ag nanorods near the AgNCs by discrete dipole approximation (DDA) method and investigated the effect of incident and polarization direction on far-field and near-field characteristics. These results could be helpful for us to take the advantage of excellent optical properties on optoelectronic and biomedical field.
{"title":"Optical properties of silver nanorods by adjusting aspect ratio in experiment and simulation","authors":"Zhi Yang, Minqiang Wang, G. Yan, Xiangyu Zhang, Jijun Ding","doi":"10.1109/NANO.2013.6720835","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720835","url":null,"abstract":"In order to understand surface plasmon resonance of anisotropic metal nanocrystals, we have produced Ag nanorods with well-controlled aspect ratio by soft template method with seed-mediated. The aspect ratio of synthesized Ag nanorods can be tuned flexibly by changing the amounts of seeds. This provides a convenience for studying localized surface plasmon resonance (LSPR) properties of Ag nanorods. Based on these excellent properties, we calculated the extinction spectrum and electrical field distribution of Ag nanorods near the AgNCs by discrete dipole approximation (DDA) method and investigated the effect of incident and polarization direction on far-field and near-field characteristics. These results could be helpful for us to take the advantage of excellent optical properties on optoelectronic and biomedical field.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"154 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":"132692991","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}
This paper proposes a bidirectional quantum secure direct communication protocol with a controller, who assists the users in making sure both sides could receive the other's secret messages simultaneously during the transmission. This protocol is based on Einstein-Podolsky-Rosen (EPR) pairs. If any eavesdropper tries to steal dealer's messages, the lawful participants will perceive it and abort their transmission.
{"title":"An efficient controlled bidirectional quantum secure direct communication by using only EPR pairs","authors":"Yao-Hsin Chou, Fang-Jhu Lin, Guo-Jyun Zeng, Ting-Hui Chu","doi":"10.1109/NANO.2013.6720932","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720932","url":null,"abstract":"This paper proposes a bidirectional quantum secure direct communication protocol with a controller, who assists the users in making sure both sides could receive the other's secret messages simultaneously during the transmission. This protocol is based on Einstein-Podolsky-Rosen (EPR) pairs. If any eavesdropper tries to steal dealer's messages, the lawful participants will perceive it and abort their transmission.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"114 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":"132731856","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.2013.6720980
C. Fujihashi
Valuable progress has been made in the area of nanotechnology, but for the further advancement of atom scale devices, results and theories need to be more precise, and have a solid fundamental basis. This paper presents the improved theory in accuracy for discrete energy level quantum dot transistors. The wave packet transition model is suggested, allowing the introduction of the state number density function, and the derived results make clear why the quantum resistance based on the uncertainty principle appears in this problem. Since quantum resistance causes no energy dissipation, the relaxation process is newly considered to explain the dissipation. The potential parameters which should be applied to the quantum model of the quantum dot transistor are derived from the fundamental classical capacitance model of the transistor, and make clear the relation between the circuit voltages in the classical model and the internal potentials in the quantum model. The theory in this paper contains the orthodox theory as a special case, and the characteristics of the discrete energy level dual quantum dot transistor are analyzed.
{"title":"On introducing of state number density function for discrete energy level quantum dot transistor","authors":"C. Fujihashi","doi":"10.1109/NANO.2013.6720980","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720980","url":null,"abstract":"Valuable progress has been made in the area of nanotechnology, but for the further advancement of atom scale devices, results and theories need to be more precise, and have a solid fundamental basis. This paper presents the improved theory in accuracy for discrete energy level quantum dot transistors. The wave packet transition model is suggested, allowing the introduction of the state number density function, and the derived results make clear why the quantum resistance based on the uncertainty principle appears in this problem. Since quantum resistance causes no energy dissipation, the relaxation process is newly considered to explain the dissipation. The potential parameters which should be applied to the quantum model of the quantum dot transistor are derived from the fundamental classical capacitance model of the transistor, and make clear the relation between the circuit voltages in the classical model and the internal potentials in the quantum model. The theory in this paper contains the orthodox theory as a special case, and the characteristics of the discrete energy level dual quantum dot transistor are analyzed.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"13 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":"132825199","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}
Large-area CuO nanowires have been synthesized by thermal oxidation of porous copper film in static air. The effect of the thermal oxidation temperature and duration are found to influence the growth of CuO nanowires significantly. With an optimized condition, the porous copper film is converted into pure CuO. The application of the as-synthesized CuO nanowires in nanoenergetic materials is also studied. The ignition temperature of the reaction between Al and CuO is significantly lower than those in micro scale or bulk composites.
{"title":"Synthesis of CuO nanowires from porous copper with promising application for nanoenergetic materials","authors":"Daguo Xu, Ting-Kai Huang, Qiaobao Zhang, Xiaoping Zhou, M. Torabi, Kaili Zhang","doi":"10.1109/NANO.2013.6720878","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720878","url":null,"abstract":"Large-area CuO nanowires have been synthesized by thermal oxidation of porous copper film in static air. The effect of the thermal oxidation temperature and duration are found to influence the growth of CuO nanowires significantly. With an optimized condition, the porous copper film is converted into pure CuO. The application of the as-synthesized CuO nanowires in nanoenergetic materials is also studied. The ignition temperature of the reaction between Al and CuO is significantly lower than those in micro scale or bulk composites.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"34 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":"132911642","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.2013.6721037
P. Marconcini
We propose a method to solve differential problems, and in particular quantum wave equations, with periodic boundary conditions, in the direct space using periodic repetitions of the cardinal sine functions as basis functions, and we adopt it for the solution of the Schrödinger equation and, in graphene nanoribbons, of the Dirac equation. We show that this method, unlike finite-difference approaches, allows to avoid the errors deriving from the numerical approximation of the derivatives, and, if all of the terms of the equations are properly handled, is equivalent to a reciprocal space solution.
{"title":"Solution of quantum wave equations using cardinal sine functions","authors":"P. Marconcini","doi":"10.1109/NANO.2013.6721037","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721037","url":null,"abstract":"We propose a method to solve differential problems, and in particular quantum wave equations, with periodic boundary conditions, in the direct space using periodic repetitions of the cardinal sine functions as basis functions, and we adopt it for the solution of the Schrödinger equation and, in graphene nanoribbons, of the Dirac equation. We show that this method, unlike finite-difference approaches, allows to avoid the errors deriving from the numerical approximation of the derivatives, and, if all of the terms of the equations are properly handled, is equivalent to a reciprocal space solution.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"8 23 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":"133971764","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.2013.6720906
Amandeep Singh, M. Sharma, O. Pandey, Xueyong Wei
This paper presents some results from a study of luminescent properties of core shell zinc sulphide (ZnS) nanoparticles (NPs) with the Mn doped core and ZnS as the shell. Influencing factors like core shell structure and dopant concentration are tuned to investigate the effects on their luminescent properties. Results indicate that these luminescent nanoparticles potentially can be used in LEDs.
{"title":"Highly luminescent ZnS:Mn/ZnS core shell nanoparticles for solid state lightning","authors":"Amandeep Singh, M. Sharma, O. Pandey, Xueyong Wei","doi":"10.1109/NANO.2013.6720906","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720906","url":null,"abstract":"This paper presents some results from a study of luminescent properties of core shell zinc sulphide (ZnS) nanoparticles (NPs) with the Mn doped core and ZnS as the shell. Influencing factors like core shell structure and dopant concentration are tuned to investigate the effects on their luminescent properties. Results indicate that these luminescent nanoparticles potentially can be used in LEDs.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"15 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":"122391982","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.2013.6720991
Bo Chen, Hsueh-Tao Chou, Ho-Chun Hsu
In the study, ZnO nanowires were synthesized by chemical bath deposition (CBD). We have synthesized the ZnO nanowires with various growth time and use the ZnO films as the photoelectrodes of DSSCs. In our experiment, the seeded solution was prepared by zinc acetate and NaOH. And the precursor of CBD method solution was made by zinc nitrate and HMTA for ZnO nanowires growing. We demonstrated the fabrications and properties of the ZnO nanowires using SEM and also investigated the performance of the dye-sensitized solar cellsl byusing the solar cell measurement system (a Keithley 2400 digital source meter) at one sun (A.M. 1.5G, 100mW/cm2) illumination. We observed that the aspect ratio of the ZnO nanowires become longer with a longer growing time (3hr, 6hr, 12hr, and 24hr). And the highest aspect ratios was 23.97. The performance of the DSSC shows that the cell which grew in 6H (Voc=0.4V, Isc=1.11mA, η=0.17%) was the optimum result.
{"title":"Effect of ZnO nanowire synthesis time on dye-sensitized solar cells","authors":"Bo Chen, Hsueh-Tao Chou, Ho-Chun Hsu","doi":"10.1109/NANO.2013.6720991","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720991","url":null,"abstract":"In the study, ZnO nanowires were synthesized by chemical bath deposition (CBD). We have synthesized the ZnO nanowires with various growth time and use the ZnO films as the photoelectrodes of DSSCs. In our experiment, the seeded solution was prepared by zinc acetate and NaOH. And the precursor of CBD method solution was made by zinc nitrate and HMTA for ZnO nanowires growing. We demonstrated the fabrications and properties of the ZnO nanowires using SEM and also investigated the performance of the dye-sensitized solar cellsl byusing the solar cell measurement system (a Keithley 2400 digital source meter) at one sun (A.M. 1.5G, 100mW/cm2) illumination. We observed that the aspect ratio of the ZnO nanowires become longer with a longer growing time (3hr, 6hr, 12hr, and 24hr). And the highest aspect ratios was 23.97. The performance of the DSSC shows that the cell which grew in 6H (Voc=0.4V, Isc=1.11mA, η=0.17%) was the optimum result.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"14 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":"127733850","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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