搜索结果: 1-15 共查到“知识库 物理学 Nano”相关记录24条 . 查询时间(0.041 秒)
电荷密度波是一种宏观量子现象，表现为晶体中电荷密度的周期性调制，广泛存在于如过渡金属硫族化合物等低维量子材料中，在光电子和量子信息等方面有着重要的应用前景。作为固体电子系统中的一种集体凝聚现象，电荷密度波的微观机理和调控一直是凝聚态物理研究领域备受关注的前沿课题。最近，清华大学物理系宋灿立、马旭村和薛其坤研究团队与中国科学院苏州纳米技术与纳米仿生研究所纳米真空互联实验站（Nano-X）李坊森副研究...
ACS Nano: 通过热退火在原子级二维氮化碳中实现室温铁磁性的研究（图）
热退火 二维氮化碳 室温铁磁性 自旋半导体
2022/5/13
原子级厚度的二维氮化碳因具有3.06 eV的本征带隙而比零带隙的石墨烯在自旋半导体应用方面具有更大的潜能。然而，该材料本身没有未配对电子为本征抗磁性，这限制了其在自旋半导体中的应用。因此，如何在该材料中引入高浓度局域自旋并实现其长程铁磁耦合，从而实现强的室温铁磁性是一项紧迫而具有挑战性的课题。
Numerical Simulation of Nano Scanning in Intermittent-Contact Mode AFM under Q control
Numerical Simulation Nano Intermittent-Contact Mode AFM Q control Atomic Physics
2012/4/24
We investigate nano scanning in tapping mode atomic force microscopy (AFM) under quality (Q) control via numerical simulations performed in SIMULINK. We focus on the simulation of whole scan process r...
Adaptive Q control for Tapping-mode Nano-scanning Using a Piezo-actuated Bimorph Probe
Adaptive Q control Tapping-mode Nano-scanning Piezo-actuated Bimorph Probe Atomic Physics
2012/4/24
A new approach, called Adaptive Q-control, for tapping-mode Atomic Force Microscopy (AFM) is introduced and implemented on a home-made AFM set-up utilizing a Laser Doppler Vibrometer (LDV) and a piezo...
Chemical Synthesis of Nano-Sized particles of Lead Oxide and their Characterization Studies
Nanoparticles lead oxide chemical method semiconductor band gap
2012/4/19
The quantum dots of semiconductor display novel and interesting phenomena that have not been in the bulk material. The color tunability is one of the most attractive characteristics in II-VI semicondu...
Arrays of Nano-Electromechanical Biosensors Functionalized by Microcontact Printing
Arrays Nano-Electromechanical Biosensors Functionalized Microcontact Printing
2012/2/27
The biofunctionalization of nanoelectromechanical structures is critical for the development of new classes of biosensors displaying improved performances and higher-level of integration. We propose a...
Hybrid-effect transmission enhancement induced by oblique illumination in nano-ridge waveguide
2011/11/24
In a nano-ridge waveguide under oblique illumination, we demonstrated transmission enhancement resulting from a hybrid effect between propagation modes and surface plasmon wave. The measured near-fiel...
Lognormal Distribution of Single Molecule Fluorescence Bursts in Micro/Nano-Fluidic Channels
Lognormal Distribution Single Molecule Fluorescence Burst Micro/Nano-Fluidic Channels
2011/8/5
Abstract: The width and shape of photon burst histograms pose significant limitations to the identification of single molecules in micro/nano-fluidic channels, and the nature of these histograms is no...
Buckled nano rod - a two state system: quantum effects on its dynamics
Buckled nano rod two state system quantum effects dynamics
2011/8/4
Abstract: We consider a suspended elastic rod under longitudinal compression. The compression can be used to adjust potential energy for transverse displacements from harmonic to double well regime. T...
Optical bistability and hysteresis of hybrid metal-semiconductor nano-dimer
bistability metal-semiconductor
2011/9/13
Optical response of an artificial composite nano-dimer comprising a semiconductor quantum dot and a metal nanosphere is analyzed theoretically. We show that internal degrees of freedom of the system c...
A consequence of the repulsive Casimir-Lifshitz force on nano-scale and the related Wheeler propagator in the classical electrodynamics
repulsive Casimir-Lifshitz force nano-scale related Wheeler propagator
2010/12/24
Mainly on nano-scale, but maybe not exclusively, it can be imagined a spontaneous charge disjunction inside certain media due to the fluctuations, collisions, wall effects, radiation or/and other pre...
Energy gaps in graphene nano-constrictions with different aspect ratios
Energy gaps graphene nano-constrictions different aspect ratios
2010/11/19
We present electron transport measurements on lithographically defined and etched graphene
nano-constrictions with different aspect ratios, including different length (l) and width (w). A roughly len...
Far-Field Plasmonic Resonance Enhanced Nano-Particle Image Velocimetry within a Micro Channel
Far-Field Plasmonic Resonance Nano-Particle Image Velocimetry Micro Channel
2010/11/16
In this paper, a novel far-field plasmonic resonance enhanced nanoparticle-seeded Particle Image Velocimetry (nPIV) has been demonstrated to measure the velocity profile in a micro channel. Chemicall...
Tenfold enhancement of MeV Proton generation by a moderate ultra-short laser interaction with H2O nano-wire targets
MeV Proton generation moderate ultra-short laser H2O nano-wire targets
2010/11/12
Compact sources of high energy protons (50-500MeV) are expected to be key technology in a wide range of scientific applications. Particularly promising is the target normal sheath acceleration (TNSA) ...
Efficiency of autonomous soft nano-machines at maximum power
Efficiency of autonomous soft nano-machines maximum power
2010/11/22
We consider nano-sized artificial or biological machines working in steady state enforced by imposing non-equilibrium concentrations of solutes or by applying external forces, torques or electric fiel...