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Noise and Fluctuations (ICNF), 2011 21st International Conference on

Date 12-16 June 2011

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Displaying Results 1 - 25 of 129
  • Index

    Publication Year: 2011, Page(s): i
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  • Table of contents

    Publication Year: 2011, Page(s):ii - xx
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  • International Advisory Committee

    Publication Year: 2011, Page(s): 1
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  • [Title page]

    Publication Year: 2011, Page(s):1 - 3
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  • Noise and diffusion of hot carriers in semiconductor materials and devices

    Publication Year: 2011, Page(s):1 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4247 KB) | HTML iconHTML

    Hot carrier transport and noise get an increasing importance due to down scaling dimensions of microelectronic devices. A survey is given of the significant evolution and progress made during the last 40 years in this domain. A focus is made on diffusion noise : definition of the noise sources, experimental determination, microscopic modeling, noise in devices. View full abstract»

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  • Noise and fluctuations in human physiology: Anomalous statistics in health and diseases

    Publication Year: 2011, Page(s): 9
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    Complex dynamics of two physiological signals, heart rate and physical activity, are introduced. Both are characterized by robust and anomalous (long-range correlated, non-Gaussian and/or non-Poisson) statistics, which break down in cases of neuro-cardiologic diseases and clinical depression, respectively. These signals, easily obtained continuously in everyday life, may serve as the “bench... View full abstract»

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  • Modeling and simulation of noise in transistors under large-signal condition

    Publication Year: 2011, Page(s):10 - 15
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (229 KB) | HTML iconHTML

    The paper reviews the current status of noise simulation and modeling for semiconductor devices (in particular, transistors) operated in large-signal (forced) conditions. From a practical standpoint, large-signal noise modeling is relevant in the simulation and design of analog components such as mixers and frequency multipliers. The specific features of cyclostationary noise are discussed, and th... View full abstract»

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  • Noise and Terahertz rectification in semiconductor diodes and transistors

    Publication Year: 2011, Page(s):16 - 21
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (683 KB) | HTML iconHTML

    In this work we explore high frequency collective phenomena present in classic HEMTs and in asymmetric nanodiodes, so called self-switching diodes (SSDs), that leads to a peak in the current noise spectrum which enhances the DC response of the devices, thus originating a THz resonance in the rectification of AC signals. These mechanisms have been evidenced in recent experiments made with HEMTs, in... View full abstract»

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  • A rigorous analysis of oscillator noise including orbital fluctuations

    Publication Year: 2011, Page(s):22 - 27
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    We discuss recent results leading to a full statistical characterization of the noise spectrum of a free running oscillator perturbed by white Gaussian noise sources, including the effect of orbital fluctuations and of their correlation with phase noise. This extends a previous theory based on the Floquet decomposition of the linearized oscillator equations originally applied to phase fluctuations... View full abstract»

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  • Noise-based information processing

    Publication Year: 2011, Page(s):28 - 33
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    We briefly introduce noise-based logic. After describing the main motivations we outline classical, instantaneous (squeezed and non-squeezed), continuum, spike and random-telegraph-signal based schemes with applications such as circuits that emulate the brain functioning and string verification via a slow communication channel. View full abstract»

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  • Critical fluctuations observed in collective human behaviors

    Publication Year: 2011, Page(s):34 - 36
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    By analyzing order-book data of the foreign exchange market, Empirical facts of real market fluctuations are summarized. Then, we introduce numerical experiments using an artificial market model consisted of algorithmic dealers. Finally, we show that a generalized Langevin equation nearly the critical point is a promising theoretical model which can describe not only microscopic market properties ... View full abstract»

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  • Structure acoustic design of hull structures with integrated wave impending technique

    Publication Year: 2011, Page(s):37 - 40
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    According to impedance mismatch and wave conversion in non-homogeneous structure, the characteristics of vibration wave propagation from typical hull link structures are analyzed through wave theory. Furthermore, elastic interlayer are introduced into L-typed hull structure with blocking mass, the main factor of hull structure-borne sound can be reduced by structuring multi impedance mismatch. On ... View full abstract»

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  • Unidirectional rotation driven by random fluctuations

    Publication Year: 2011, Page(s):41 - 44
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (510 KB) | HTML iconHTML

    Ratchet effect might be responsible for the unidirectional movement of a couple of systems. The theoretical study of ratchet mechanism usually focuses on the particle or state properties on a prescribed ratchet potential. In contrast, this work starts with a real system and shows how one can manipulate the system setup to have a ratchet potential for the system state. The model consists of a rotor... View full abstract»

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  • Harmonic oscillator with non-Gaussian frequency fluctuations

    Publication Year: 2011, Page(s):45 - 48
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    The moment and probability characteristics of harmonic oscillator with white non-Gaussian frequency fluctuations are investigated. Using a functional approach we derive the integro-differential Kolmogorov equation for the joint probability density function of oscillator coordinate and velocity. Since it is difficult to find a solution of this equation in the steady state the set of equations for j... View full abstract»

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  • Time dependent statistical thermodynamic properties of disordered solids

    Publication Year: 2011, Page(s):49 - 52
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    It is noted that glass is in non-equilibrium state on the way to the thermal equilibrium, that is, a kind of a slow relaxation process and depends on its whole thermal history. It is also known that, in the experimental way, so called the entropy of glass measured by cooling and heating shows respectively lower and upper bounds of the entropy defined by statistical thermodynamics. In this paper, w... View full abstract»

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  • Current noise in stationary conditions in MgB2 thin films

    Publication Year: 2011, Page(s):53 - 56
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    The present paper concerns the analysis of the current noise taken in stationary conditions at different stages of the transition process in MgB2 thin films. The specimen, during its transition, reaches an intermediate state characterized by resistive and superconductive regions. Except in the case where the specimen resistance is lower than about one tenth of its value at the end of th... View full abstract»

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  • Analysis of low-frequency noise in organic field-effect transistors combining static and noise data

    Publication Year: 2011, Page(s):57 - 60
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    A study of electrical properties of organic transistors combining static and noise data is presented. The DC data provide key parameters, such as mobility, contact resistance and the surface state density. The low-frequency noise analysis proves that the features observed in DC measurements, e.g. higher trap density, reflect poor crystal quality and thus are responsible for lower mobility and high... View full abstract»

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  • Atomic vibration-induced 1/ƒ noise in sensing nanomaterials

    Publication Year: 2011, Page(s):61 - 64
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    Results demonstrating that the temperature dependence of the 1/f noise intensity in a gold nanoparticle-chemosensor and metallic nanowires is the image of the atomic vibration (phonon) spectrum of the metals they were made of are presented. To this purpose, existing noise data for gold nanoparticles (C. Kurdak et al., Appl. Phys. Lett. 86, 073506, 2005 [1]) and silver and copper nanowires (A. Bid,... View full abstract»

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  • 1/f permitivity fluctuation in fullerene C60

    Publication Year: 2011, Page(s):65 - 68
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    The electric capacity of the condenser whose inside is filled with fullerene C60 is measured using two-phase lock-in amplifier. It is found that both the real part and imaginary part of the permitivity of the fullerene shows 1/f fluctuation in the low frequency area. View full abstract»

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  • Low frequency noise and ions diffusion in the CdTe bulk single crystals

    Publication Year: 2011, Page(s):69 - 72
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    The effect of ions diffusion on time dependence of noise and polarization phenomena of CdTe bulk single crystals has been carried out. We evaluated the instability of the reverse current of the Schottky contact at the P-type CdTe and the Au interface by a model which considers the effects of deep acceptors. The results shows small detrapping time compared to the experimental measurements. We sugge... View full abstract»

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  • Low-frequency noise in ZnO varistor structures

    Publication Year: 2011, Page(s):73 - 76
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    The noise spectroscopy has been used as a diagnostic tool of surge arrester varistor structures consisting of grained ZnO. The electrical properties of measured samples have been described. In the experimental study, the applied measurement system and the results of noise measurements for the selected structures of 280 V and 440 V varistors have been presented. Noise properties are related to elec... View full abstract»

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  • Low frequency noise in organic solar cells

    Publication Year: 2011, Page(s):77 - 79
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    The conduction mechanism in organic heterojunction solar cells (OHSCs) has been discussed based on the results of low frequency noise spectroscopy. We prepared OHSCs composed of poly-(2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene), regioregular poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester. The devices prepared exhibited 1/f noise at the bias voltage range from... View full abstract»

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  • Noise of cold emission cathode

    Publication Year: 2011, Page(s):80 - 83
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (590 KB) | HTML iconHTML

    The paper deals with a spectroscopic method intended for characterization of virgin oxide and resin-coated cold emission cathodes. The noise spectroscopy in time and frequency domain is based on measuring cathode's voltage noise, in ultrahigh vacuum conditions ~2 · 10-5 Pa. These conditions are required in order to avoid environment interaction with ions, which are present in the... View full abstract»

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  • Noise diagnostics of advanced composite materials for structural applications

    Publication Year: 2011, Page(s):84 - 87
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (695 KB) | HTML iconHTML

    Our study is focused on noise diagnostics of an advanced composite material for structural applications called extren, which consists of a combination of a fibre glass reinforcement and a resin binder. Electromagnetic and acoustic emission signals appear during mechanical loading of the material under investigation. They carry information about micro-cracks generated in tested materials. We made l... View full abstract»

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  • Primary thermometry by the measurement of shot noise in a tunnel junction

    Publication Year: 2011, Page(s):88 - 89
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    We fabricated an Al-AlOx-Al tunnel junction by the double-angle evaporation technique as a source of shot noise. A precision RF-power-measurement setup in the frequency range near 1 GHz was installed in a He-3 refrigerator. We measured temperature from 0.3 K to room temperature using shot noise thermometer and compared the temperature with that of conventional temperature sensors. View full abstract»

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