{"title":"Modeling the limits of gate oxide scaling with a Schrodinger-based method of direct tunneling gate currents of nanoscale MOSFETs","authors":"Chung-Kuang Huang, N. Goldsman","doi":"10.1109/NANO.2001.966444","DOIUrl":"https://doi.org/10.1109/NANO.2001.966444","url":null,"abstract":"Calculates gate currents of nanoscale MOSFETs with ultrathin gate oxides for different gate and drain biases by directly solving the Schrodinger, electron-Boltzmann, Poisson and hole-continuity equations. Computations give rise to a subband structure that is populated using the calculated distribution function. The resulting tunneling current versus gate voltage curves show oscillatory structure which reflects quantum effects.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114555628","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":"A micro power supply for space micro-electromechanical systems using a high-temperature superconductor-magnet bearing","authors":"E. Lee, T. L. Wilson","doi":"10.1109/NANO.2001.966470","DOIUrl":"https://doi.org/10.1109/NANO.2001.966470","url":null,"abstract":"This paper investigates the possibility of using a high temperature superconductor (HTS) for a micro power supply in space micro-electromechanical systems (MEMS). Feasibility studies have been carried out to develop a micro HTS-magnet bearing system which can be used for wear prevention and as a power supply. The rationale lies in the unique capability of the HTS to adapt to low temperatures, radiation, and vacuum environments in space, and to enhance system stability passively without power consumption. This micro power supply consists of three components: an HTS magnet flywheel energy storage system, a motor/generator, and a lithium micro battery. The generator armature planar coil will be deposited on the surface of the stator of the flywheel which encloses the HTS. The rotor of the flywheel has alternating permanent magnet poles for the motor/generator. The HTS flywheel has high angular momentum storage since its drag torque is nearly velocity-independent and extremely small, enabling high-speed rotation. Preliminary investigations show that the micro-sized superconductor magnet bearing system is compatible with current micro-fabrication technology and is ideal for preventing wear and producing power in space applications.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"22 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120814459","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}
Yiming Li, O. Voskoboynikov, C.P. Lee, C. Shih, S. Sze, O. Tretyak
{"title":"Magnetic field dependence of electron energy states in 3D nano-scopic quantum rings","authors":"Yiming Li, O. Voskoboynikov, C.P. Lee, C. Shih, S. Sze, O. Tretyak","doi":"10.1109/NANO.2001.966384","DOIUrl":"https://doi.org/10.1109/NANO.2001.966384","url":null,"abstract":"We study theoretically the electron energy states for realistic models in 3D nano-scopic semiconductor quantum rings. The effective one-band Hamiltonian approximation and the Ben Daniel-Duke boundary conditions are considered simultaneously in the model formulation. The proposed model problem is solved numerically by using central difference scheme with non-uniform meshing technique, shifted and balanced QR algorithm, and inverse iteration method. It is found that calculation results strongly depend on the radial cross shapes of InAs/GaAs quantum rings. The dependence of energy states on an external magnetic field for 3D nano-scopic quantum ring indicates there is a significant difference among those reported results with simplified 1D or 2D approaches in literature. Simulation results demonstrate very good consistence with the experimental data.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127622424","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}
R. Kummamuru, A. Orlov, G. Tóth, J. Timler, R. Rajagopal, C. Lent, G. Bernstein, G. Snider
{"title":"Power gain in a quantum-dot cellular automata (QCA) shift register","authors":"R. Kummamuru, A. Orlov, G. Tóth, J. Timler, R. Rajagopal, C. Lent, G. Bernstein, G. Snider","doi":"10.1109/NANO.2001.966461","DOIUrl":"https://doi.org/10.1109/NANO.2001.966461","url":null,"abstract":"Discusses an experiment that demonstrates power gain in a quantum-dot cellular automata (QCA) shift register. Power gain is essential in any electronic system for the restoration of logic levels. The clock signal plays an important role in providing power gain in QCA devices as it can be used as a source of energy for the system. We discuss how this can be achieved in a QCA shift register and experimentally demonstrate a power gain greater than unity.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125440851","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":"Six-axis nano-positioning with planar magnetic levitation","authors":"Won-jong Kim","doi":"10.1109/NANO.2001.966414","DOIUrl":"https://doi.org/10.1109/NANO.2001.966414","url":null,"abstract":"Nanoscale science and engineering is an emerging technological field and,has immense economic and societal impacts. This paper presents a high-precision magnetic levitation (maglev) technology that can be used in many crucial research activities in nanotechnology and, other precision applications dealing with delicate motions and forces. They include manufacture of nanoscale structures, atomic-level manipulation, assembly and packaging of microparts, vibration isolation for instrumentation, and seismic motion detection. A compact, lightweight, single-moving part that holds the specimen can be magnetically levitated-in all six degrees of freedom. This paper has demonstrated the applicability of this maglev technology in nanoscale science and engineering.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"30 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120901292","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":"Organic films for nanoelectronics and sensing applications","authors":"A. Ray, A. V. Nabok","doi":"10.1109/NANO.2001.966481","DOIUrl":"https://doi.org/10.1109/NANO.2001.966481","url":null,"abstract":"Films of polyallylamine hydrochloride (PAA) and polysteresulfonate sodium salt (PSS) were formulated using the polyelectrolyte self-assembly technique. Electrical measurements show that there is no presence of counter ions and films are electrically stable. Responses of composite films of PAA/(indicator/PAA)/sub n/(Enzyme/PAA)/sub m/ deposited on suitably treated glass substrates to heavy metals and pesticides are found to be selective from their optical absorption spectra.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122493768","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 HARPSS process for fabrication of nano-precision silicon electromechanical resonators","authors":"Seong Yoel No, F. Ayazi","doi":"10.1109/NANO.2001.966472","DOIUrl":"https://doi.org/10.1109/NANO.2001.966472","url":null,"abstract":"In this paper, radio frequency (RF) ultra-stiff electromechanical resonators are introduced and compared with their ultra-light counterparts. RF ultra-stiff resonators with dimensions in the low end of the micrometer scale can yield UHF frequencies (0.33 GHz) by operating at their higher order flexural modes. However, electrostatic actuation and capacitive sensing of ultra-stiff resonators will require nanoscale airgaps. The HARPSS (high aspect-ratio combined poly and single crystal silicon MEMS technology) fabrication process presented in this paper is an all-silicon process that is capable of producing capacitive silicon resonators (poly and single-crystalline) with lateral gap spacing as small as 10 nm between the resonating structure and the silicon electrodes, without the need for nano-lithography.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131173560","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":"Static behavior of a piezoelectric micro robot","authors":"K. Rochdi, S. Dembélé","doi":"10.1109/NANO.2001.966415","DOIUrl":"https://doi.org/10.1109/NANO.2001.966415","url":null,"abstract":"This paper presents a study of the behavior of piezoelectric micro robot to three degrees of freedom (longitudinal movement, transversal movement and rotation) foreseen to work on flat surfaces. Its main merits are its ability to perform micro-scale displacements and to support heavy pre-loads. An adequate interface is developed, allowing the control of the system. Even, a phase sensitive vision method is developed to sense the position and the heading angle with an accuracy better than 0.2 pixel i.e. 12 /spl mu/m with an observed field of about 4/spl times/3 cm/sup 2/. A personnel computer controls the whole system.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131919661","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":"A novel capacitance control design of tunable capacitor using multiple electrostatic driving electrodes","authors":"J. Chiou, Y.C. Lin","doi":"10.1109/NANO.2001.966441","DOIUrl":"https://doi.org/10.1109/NANO.2001.966441","url":null,"abstract":"A novel method that is capable of linearly electrostatic driving a tunable capacitor is proposed in this paper. By extending the derivation of electrostatic theory and elastic theory in constructing the tunable capacitor, the nonlinear relationship between applied voltages and displacement (air gap) between two parallel plates of the capacitor is obtained. To suppress the nonlinearity so that the gap between the capacitor can vary linearly with the applied voltage, a control design method based on the variation of the multi-rectangular electrodes and applied voltages is proposed. By varying the number of rectangular electrodes that are evenly divided according to the size of the upper plate of the capacitor, the working space of the tunable capacitor with nonlinear characteristics is obtained. With this working space, linear control design method based on fixed or linearly varied applied voltages can be used to determine the number of the multi-rectangular electrodes such that stepping effect of the tunable capacitor can be achieved. Examples are used to demonstrate the feasibility of the present control design.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"830 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133842689","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":"Quantum mechanical theory and modeling of molecular transistors","authors":"R. Pati, S. Karna","doi":"10.1109/NANO.2001.966445","DOIUrl":"https://doi.org/10.1109/NANO.2001.966445","url":null,"abstract":"A theoretical formalism based on the Buttiker multiterminal response formula has been developed and applied to model a novel three terminal molecular device, constructed from common organic donor, acceptor and /spl pi/-electron conjugated spacer structures. Quantum conductivity calculations in the tight binding (extended Huckel) framework show switching behavior in the calculated I-V characteristics of the modeled transistor upon application of an external potential to the third capacitive gate terminal.","PeriodicalId":111348,"journal":{"name":"Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122925368","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}