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The electrical conductivity of PVC films prepared with a patented plasticizer of type "A" was measured with high precision automated setup, based on standard ring sell with a voltage range much less than breakdown voltage. Continual…

介观与纳米尺度物理 · 物理学 2010-03-12 D. V. Vlasov , L. A. Apresyan , V. I. Krystob , T. V. Vlasova

It has been a general trend to develop low-voltage electron microscopes due to their high imaging contrast of the sample and low radiation damage. Atom-resolved transmission electron microscopes with voltages as low as 15-40 kV have been…

仪器与探测器 · 物理学 2015-12-29 Wei-Tse Chang , Chun-Yueh Lin , Wei-Hao Hsu , Mu-Tung Chang , Yi-Sheng Chen , En-Te Hwu , Ing-Shouh Hwang

We present new results obtained by field effect measurements on insulating granular Al thin films. First, reproducible and stable conductance fluctuations are seen in micron size samples as a function of gate voltage. The anomalous field…

无序系统与神经网络 · 物理学 2012-06-22 Julien Delahaye , Thierry Grenet

The growth and characterization of materials using empirical optimization typically requires a significant amount of expert time, experience, and resources. Several complementary characterization methods are routinely performed to determine…

材料科学 · 物理学 2025-08-20 Isaiah A. Moses , Chen Chen , Joan M. Redwing , Wesley F. Reinhart

Capacitance measurement is a useful technique in studying quantum devices, as it directly probes the local particle charging properties, i.e. the system compressibility. Here we report one approach which can measure capacitance from mK to…

介观与纳米尺度物理 · 物理学 2022-12-29 Lili Zhao , Wenlu Lin , Xing Fan , Yuanjun Song , Hong Lu , Yang Liu

We have studied the nonlinear current-voltage characteristic of a two dimensional lattice Coulomb gas by Monte Carlo simulation. We present three different determinations of the power-law exponent $a(T)$ of the nonlinear current-voltage…

凝聚态物理 · 物理学 2009-10-28 Hans Weber , Mats Wallin , Henrik Jeldtoft Jensen

We study dynamic fluctuation effects of $YBa_2Cu_3O_{7-\delta}$ thin films in zero field around $T_c$ by doing frequency-dependent microwave conductivity measurements at different powers. The length scales probed in the experiments are…

超导电性 · 物理学 2011-06-07 Hua Xu , Su Li , C. J. Lobb , Steven M. Anlage

Narrow-channel accumulated body nMOSFET devices with p-type side-gates surrounding the active area have been electrically characterized between 100 and 400 K with varied side-gate biasing (Vside). The subthreshold slope (SS) and drain…

We suggest the nondestructive method for determination of the dielectric constant of substrate-deposited thin films by capacitance measurement with two parallel wires placed on top of the film. The exact analytical formula for the…

介观与纳米尺度物理 · 物理学 2016-11-29 Svitlana Kondovych , Igor Luk'yanchuk

Controlling doping is essential for a successful integration of semiconductor materials into device technologies. However, the assessment of doping levels and the distribution of charge carriers in carbon nanotubes or other nanoscale…

A new approach is introduced to significantly improve the performance of thermophotovoltaic (TPV) systems by using low-dimensional thermal emitters and photovoltaic (PV) cells. By reducing the thickness of both the emitter and the PV cell,…

光学 · 物理学 2015-02-10 Jonathan K. Tong , Wei-Chun Hsu , Yi Huang , Svetlana V. Boriskina , Gang Chen

We perform electrical field effect measurements at 4 K on insulating granular aluminium thin films. When the samples size is reduced below 100 micrometers, reproducible and stable conductance fluctuations are seen as a function of the gate…

无序系统与神经网络 · 物理学 2008-09-08 J. Delahaye , T. Grenet , F. Gay

Virtual Compton Scattering (VCS) at low transferred momenta to the proton ($t$) and sufficiently high c.m. energies ($s$) may be used to a) study $Q^2$--dependence of leading $t$--channel exchanges and b) look for onset of scaling behavior…

高能物理 - 唯象学 · 物理学 2007-05-23 Andrei Afanasev

Low-noise detectors are a key technology for the next generation of astronomical instruments aimed at spectroscopy of faint objects and the search for exoplanets. In this context, the multiple-amplifier sensing charge-coupled device…

Whilst there have been several reports of the spin Seebeck effect to date, comparison of the absolute voltage(s) measured, in particular for thin films, is limited. In this letter we demonstrate normalization of the spin Seebeck effect for…

介观与纳米尺度物理 · 物理学 2018-07-24 K. Morrison , A. J Caruana , C. Cox

Recent success in the growth of monolayer MoS$_2$ via chemical vapor deposition (CVD) has opened up prospects for the implementation of these materials into thin film electronic and optoelectronic devices. Here, we investigate the…

The existing QCD predictions for the Deeply Virtual Compton Scattering (DVCS) depend on the convention used for the skewedness parameter and on the reference frame used to define helicity amplitudes. These ambiquities are formally…

高能物理 - 唯象学 · 物理学 2014-07-04 V. M. Braun , A. N. Manashov , D. Mueller , B. Pirnay

We have developed novel impedance standards based on thin-film surface-mount-device (SMD) resistors. Due to the small dimensions of such resistors, the quantities determining their frequency dependence are very small and can be either…

仪器与探测器 · 物理学 2024-08-16 Jürgen Schurr , Rolf H. Judaschke , Shakil A. Awan

In high-quality c-axis-oriented MgB2 thin films, we observed high critical current densities (Jc) of 16 MA/cm^2 at 15 K under self fields comparable to those of cuprate high-temperature superconductors. The extrapolated value of Jc at 5 K…

超导电性 · 物理学 2009-11-07 Hyeong-Jin Kim , W. N. Kang , Eun-Mi Choi , Mun-Seog Kim , Kijoon H. P. Kim , Sung-Ik Lee

I-V characteristics of polycrystalline Y(1-x)CaxBa2Cu3O(7-{\delta}) samples (x=0.025 and 0.20) have been measured at different temperatures and magnetic fields in the range 0.1 T-6.9 T. The scaling behavior has been established for both…

超导电性 · 物理学 2010-12-24 E. Nazarova , K. Nenkov , K. Buchkov , A. Zahariev