نتایج جستجو برای: shaped graphene nanodevice

تعداد نتایج: 122176  

2014
Thaer M. Dieb Masaharu Yoshioka Shinjiro Hara Marcus C. Newton

In utilizing nanodevice development research papers to assist in experimental planning and design, it is useful to identify and annotate characteristic categories of information contained in those papers such as source material, evaluation parameter, etc. In order to support this annotation process, we have been working to construct a nanodevice development corpus and a complementary automatic ...

Journal: :Nanotechnology 2009
S Bednarek B Szafran

We present an idea for a nanodevice in which an arbitrary sequence of three basic quantum single qubit gates-negation, Hadamard, and phase shift-can be performed on a single electron spin. The spin state is manipulated using the Dresselhaus spin-orbit coupling intrinsically present in zinc blende materials. The electron trajectory within the device is controlled by voltages applied to a multipl...

Journal: :The Journal of chemical physics 2005
Igor V Ovchinnikov Daniel Neuhauser

A Redfield-like Liouville equation for an open system that couples to one or more leads and exchanges particles with them is derived. The equation is presented for a general case. A case study of time-dependent transport through a single quantum level for varying electrostatic and chemical potentials in the leads is presented. For the case of varying electrostatic potentials the proposed equati...

Journal: :journal of ultrafine grained and nanostructured materials 0
reza ansari department of mechanical engineering, university of guilan, p.o.box 3756, rasht, iran. shahram ajori department of mechanical engineering, university of guilan, p.o.box 3756, rasht, iran. sina malakpour department of mechanical engineering, university of guilan, p.o.box 3756, rasht, iran.

importance of covalent bonded two-dimensional monolayer nanostructures and also hydrocarbons is undeniably responsible for creation of new fascinating materials like polyphenylene polymer, a hydrocarbon super honeycomb network, so-called porous graphene. the mechanical properties of porous graphene such as its young’s modulus, poisson’s ratio and the bulk modulus as the determinative properties...

2013
Jack Baldwin

The combined effects of an asymmetric (square or V-shaped) notch and uniaxial strain are studied in a zigzag graphene nanoribbon (ZGNR) device using a generalized tight-binding model. The spin-polarization and conductance-gap properties, calculated within the Landauer–Büttiker formalism, were found to be tunable for uniaxial strain along the ribbon-length and ribbon-width for an ideal ZGNR and ...

Journal: :Nanotechnology 2009
Z Z Zhang Z H Wu Kai Chang F M Peeters

We theoretically investigate resonant tunneling through S- and U-shaped nanostructured graphene nanoribbons. A rich structure of resonant tunneling peaks is found emanating from different quasi-bound states in the middle region. The tunneling current can be turned on and off by varying the Fermi energy. Tunability of resonant tunneling is realized by changing the width of the left and/or right ...

Journal: :Nano letters 2013
Narasimha G Boddeti Xinghui Liu Rong Long Jianliang Xiao J Scott Bunch Martin L Dunn

We created graphene blisters that cover and seal an annular cylinder-shaped microcavity in a SiO2 substrate filled with a gas. By controlling the pressure difference between the gas inside and outside of the microcavity, we switch the graphene membrane between multiple stable equilibrium configurations. We carried out experiments starting from the situation where the pressure of the gas inside ...

Journal: :Nature nanotechnology 2014
Felice Torrisi Jonathan N Coleman

is compatible with conventional device manufacturing processes8; doping processes that can assure stable, high electrical conductivity over long periods9; a method to improve the environmental stability of graphene electrodes against moisture and chemicals in the air10; and a method to decrease the contact resistance between electrodes and active materials11. One issue, in particular, with CVDg...

Journal: :applied biotechnology reports 0
khadijeh eskandari nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran sharareh sajjadi department of biology, faculty of science, roudehen branch, islamic azad university, roudehen, iran amir-homayon keihan nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran mehdi kamali nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran jamal rashidiani nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran zahra safiri nanobiotechnology research center, baqiyatallah university of medical science, tehran, iran

direct electron transferring of glucose oxidase was investigated   on reduced graphene and graphene oxide templates. the direct electrochemistry   glucose oxidase on   graphene showed a cyclic voltammograms corresponding to the fad/fadh 2   redox couple with an anodic, cathodic and formal potential of -430, -460 and   -445 mv, respectively in 0.1 m phosphate buffer solution and air saturated   ...

2004
V A Margulis

The electron transport through a quantum sphere with three one-dimensional wires attached to it is investigated. An explicit form for the transmission coefficient as a function of the electron energy is found from the first principles. The asymmetric Fano resonances are detected in transmission of the system. The collapse of the resonances is shown to appear under certain conditions. A two-term...

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