{"title":"Simulation of Dissipative Single-Electron Dynamics in Coupled Quantum Wells","authors":"M. Batistuta, M. Stella, H. Biagi, J. D. da Costa","doi":"10.1109/NANOEL.2006.1609679","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609679","url":null,"abstract":"A one-dimensional model is developed and numerical simulation results are presented for single-electron tunnelling non-linear dynamics in a pair of coupled quantum dots, with ohmic energy dissipation. The analysis of a simple mesoscopic cell structure with two coupled quantum dots, possessing bi-stability with only one excess electron, is also presented in order to evaluate its application in implementing fast cellular automata.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129635957","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}
Y. Leung, A. B. Djuriši, W. Kwok, D. Phillips, W. K. Chan, H. Chen, S. Gwo
{"title":"Optical properties of ZnO ribbon/comb structures","authors":"Y. Leung, A. B. Djuriši, W. Kwok, D. Phillips, W. K. Chan, H. Chen, S. Gwo","doi":"10.1109/NANOEL.2006.1609750","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609750","url":null,"abstract":"In this paper, we report the study of the optical properties of ZnO ribbon/comb nanostructures. The nanostructures were synthesized using a previously reported procedure, and they were characterized by scanning electron microscopy (SEM). The optical properties of ribbon/comb structures were studied using variable temperature photoluminescence with a HeCd laser excitation source (325 nm). Time-resolved photoluminescence (TRPL) was measured by using the Kerr gated fluorescence technique.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195322","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}
{"title":"Effects of a-C:Fe Catalyst Deposition Method on the Growth of Carbon Nanotubes","authors":"K. P. Yung, B. Tay","doi":"10.1109/NANOEL.2006.1609755","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609755","url":null,"abstract":"Carbon nanotubes were grown using RF magnetron sputtering or Filtered Cathodic Vacuum Arc (FCVA) deposited iron containing atmosphere carbon (a-C: Fe) films as catalyst, by Hot filament chemical vapor deposition (HFCVD). The chemical structure of the catalyst layers was studied by X-ray diffraction (XRD) and the morphology of the films was analyzed by scanning electron microscope (SEM). Randomly orientated carbon nanotubes film was found on sputtered a-C:Fe catalyst, while well-aligned carbon nanotubes were observed on FCVA deposited a-C:Fe catalyst. The diameters of the nanotubes grown on sputtered a-C:Fe follow to that of the annealed catalyst particles grain size. However, the diameters of the nanotubes from FCVA a-C: Fe were much smaller than the grain size of the catalyst particles they grown from","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124010828","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}
{"title":"In situ AFM Study of the Electropolymerization of Polypyrrole/Gold Nanocomposite","authors":"Qin Zhou, Changming Li","doi":"10.1109/NANOEL.2006.1609759","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609759","url":null,"abstract":"In this work, an electrochemical cell was designed and fabricated for in situ AFM study of the electropolymerization process of PPY in the presence of gold nanoparticles. PPY/Au nanocomposite was one step-synthesized simply by the potentiostatic deposition at constant potential. Based on the results of the current-time transient (I-t) measurements and in situ AFM measurements, it was found that the nucleation and growth of PPY/Au nanocomposite was an instantaneous three-dimension progress after nuclei overlapping. Regarding the process before nuclei overlapping, compared with that of pure PPY, it departed from the instantaneous three-dimension progress because of the presence of gold nanoparticles.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"490-495 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130549218","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}
{"title":"The Gain and Related Characteristics of Self-Assembled Quantum Dash Structures","authors":"K. Chan, J.H. Wei","doi":"10.1109/NANOEL.2006.1609746","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609746","url":null,"abstract":"The effects of size fluctuation on the gain and related characteristics of quantum dash structures are analysed theoretically. Detailed comparison with quantum well structures and performance optimization by blue-shifting the emission energy are carried out.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129205868","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}
{"title":"Chemical Synthesis of ZnO Nanocrystals","authors":"Y. Wu, A. Tok, F. Boey, X. Zeng, X. Zhang","doi":"10.1109/NANOEL.2006.1609701","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609701","url":null,"abstract":"Nano-crystalline ZnO particles were synthesized using alcoholic solutions of zinc acetate dihydrate through a colloidal process. Five types of capping agents: 3-aminopropyl trimethoxysilane (Am), tetraethyl orthosilicate (TEOS), mercaptosuccinic acid (Ms), 3-mercaptopropyl trimethoxysilane (Mp) and polyvinylpyrrolidone (Pv) were added at the first ZnO precipitation time (1stPPT) to limit the particle growth. The first three capping agents effectively capped the ZnO nanoparticles and limited the growth of the particles, while the last two capping agents caused agglomeration or larger clusters in the solutions. Particles synthesized were in the size range of 10nm to 30nm after capping, and grew to 60nm and 100nm in 3 weeks and 6 weeks respectively during storage at ambient conditions. Refluxing time was found to only affect the 1stPPT time. Washing by methanol and water and slow drying are very important in converting Zn(OH)2into ZnO. XRD analyses revealed that single crystal ZnO nanoparticles were achieved with crystal size 53-55nm. Photoluminescence (PL) spectra showed high intensity in UV emission and very low intensity in the visible emission, which indicates a good surface morphology of the ZnO nanoparticles with little surface defect. Optical absorption spectra showed absorption at wavelength of 380nm from the uncapped ZnO, corresponding to the band-gap of bulk ZnO. While capped ZnO absorbed at shorter wavelength (350nm) indicating a much smaller particle size.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126155731","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}
C. Chen, S. Kimura, S. Sen, S. Nozaki, H. Ono, K. Uchida, H. Morisaki
{"title":"Position and Size-Controlled Photosynthesis of Silicon Nanocrystals in SiO2Films","authors":"C. Chen, S. Kimura, S. Sen, S. Nozaki, H. Ono, K. Uchida, H. Morisaki","doi":"10.1109/NANOEL.2006.1609731","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609731","url":null,"abstract":"The SiOxthin film made of the SiOxnanoparticles (~40, gm) shows a strong reaction to laser irradiation. The photosynthesis of silicon (Si) nanocrystals (NC's) is found to be self-limited to the laser power and exposure time. Furthermore, the laser irradiation of the SiOxfilm not only produces Si NC's, also transforms the SiOxfilm from the powder-like to the continuous. The photosynthesis of Si NC's has several advantages such as low-temperature process and good control in the size and positioning over the conventional synthesis methods and has many potential applications.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131694208","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}
{"title":"Thermal Conductivity of Nanoparticle Suspensions (Nanofluids)","authors":"S. Murshed, K. Leong, C. Yang","doi":"10.1109/NANOEL.2006.1609703","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609703","url":null,"abstract":"This paper presents theoretical and experimental investigations on the enhanced thermal conductivity of nanofluids. The thermal conductivity of nanofluids is found to significantly increase with particle volume fraction. Taking into account the effects of the interfacial layer and particle size, two models (one for spherical nanoparticles and the other for cylindrical nanoparticles in base fluids) are developed to predict the effective thermal conductivity of nanofluids. The proposed models show good agreement with the experimental results and give better predictions of the effective thermal conductivity of nanofluids compared to existing models in the literature.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134279652","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}
Y. Mei, G. Siu, R. Fu, P. Chu, J. Zhai, Y.J. Wang, O. Tsui, Z. Tang, J.J. Shi, M. Kong
{"title":"A Nano-MOS Array: Metallic Carbon Nanostructure Connected with Nanoscale SiO2Islands inside Insulated Alumina Nanochannels on Silicon Substrate","authors":"Y. Mei, G. Siu, R. Fu, P. Chu, J. Zhai, Y.J. Wang, O. Tsui, Z. Tang, J.J. Shi, M. Kong","doi":"10.1109/NANOEL.2006.1609760","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609760","url":null,"abstract":"A nano-MOS array consisting of metallic carbon nanostructures connected with nanoscale SiO2islands inside insulated alumina nanochannel on silicon substrate was fabricated via Si-based porous anodic alumina (PAA) template. The electrical properties of the nano-MOS array were studied by means of current-voltage (I-V) and frequency dependent capacitance-voltage (C-V) tests. This structure is important to the application of carbon nanostructures and PAA template and has high potential in future nanoelectronics applications.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115687971","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. Agarwal, N. Singh, T. Liow, R. Kumar, N. Balasubramanian, D. Kwong
{"title":"Transport Characteristics of Si Nanowires in Bulk Silicon and SOI Wafers","authors":"A. Agarwal, N. Singh, T. Liow, R. Kumar, N. Balasubramanian, D. Kwong","doi":"10.1109/NANOEL.2006.1609690","DOIUrl":"https://doi.org/10.1109/NANOEL.2006.1609690","url":null,"abstract":"Silicon nanowires (SiNW) were fabricated on bulk Silicon and SOI wafers by means of conventional Si process technology. The nanowires were formed by stress-limited oxidation of Si beams pre-patterned on the wafer. Single or double vertically self-aligned wires were obtained depending on the bulk or SOI wafer used and also on the depth of silicon beam etched. The resulting nanowires exhibit triangular cross-section that can be converted to circular shape by annealing at high temperatures, exploiting the visco-elastic properties of SiO2and Si. Electrical measurements on single nanowire show that the resistance scales with length demonstrating consistent cross-sectional dimension in wires of different length. The nanowires formed on SOI wafers were also characterized as channels in FET configuration, using substrate as gate electrode. This technique can be exploited for realizing several nano-electronics, NEMS and biosensor applications in bulk silicon or SOI wafers, all in a CMOS compatible manner.","PeriodicalId":220722,"journal":{"name":"2006 IEEE Conference on Emerging Technologies - Nanoelectronics","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115744684","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}