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Quantum sensing and computation can be realized with superconducting microwave circuits. Qubits are engineered quantum systems of capacitors and inductors with non-linear Josephson junctions. They operate in the single-excitation quantum…

We study field-effect transistors realized from VO2 nanobeams with HfO2 as the gate dielectric. When heated up from low to high temperatures, VO2 undergoes an insulator-to-metal transition. We observe a change in conductance (~ 6 percent)…

Strongly Correlated Electrons · Physics 2011-09-30 Shamashis Sengupta , Kevin Wang , Kai Liu , Ajay K. Bhat , Sajal Dhara , Junqiao Wu , Mandar M. Deshmukh

We report direct measurements of the potential barriers and electronic coupling between nanowire segments within a sketch-based oxide nanotransistor (SketchFET) device. Near room temperature, switching is governed by thermally activation…

Mesoscale and Nanoscale Physics · Physics 2010-09-14 Cheng Cen , Daniela Bogorin , Jeremy Levy

An unresolved challenge facing electronics at a few-nm scale is that resistive channels start leaking due to quantum tunneling. This affects the performance of nanoscale transistors, with single-molecule devices displaying particularly low…

In 2D field effect transistors the gate electrostatically dopes the 2D semiconductor (2DSC) channel, tuning the Fermi level. In principle, Kelvin probe force microscopy (KPFM) can detect the Fermi level, and its dependence on gate bias as…

A transient and high sensitivity sensor based on high-Q microcavity is proposed and studied theoretically. There are two ways to realize the transient sensor: monitor the spectrum by fast scanning of probe laser frequency or monitor the…

Carbon nanotube field-effect transistors (CNT FETs) have been proposed as possible building blocks for future nano-electronics. But a challenge with CNT FETs is that they appear to randomly display varying amounts of hysteresis in their…

Electronic structure properties of nanowires (NW) with diameters of 1.5 nm and 3 nm based on semimetallic $\alpha$-Sn are investigated by employing density functional theory and perturbative $GW$ methods. We explore the dependence of…

Materials Science · Physics 2017-01-04 Alfonso Sanchez-Soares , Conor O'Donnell , James C. Greer

Silicon-On-Insulator nanowire transistors of very small dimensions exhibit quantum effects like Coulomb blockade or single-dopant transport at low temperature. The same process also yields excellent field-effect transistors (FETs) for…

Mesoscale and Nanoscale Physics · Physics 2015-03-16 P. Clapera , X. Jehl , A. Corna , S. J. Ray , M. Sanquer , A. Valentian , S. Barraud

We demonstrated selective gas sensing with MoS2 thin-film transistors using the change in the channel conductance, characteristic transient time and low-frequency current fluctuations as the sensing parameters. The back-gated MoS2 thin-film…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 R. Samnakay , C. Jiang , S. L. Rumyantsev , M. S. Shur , A. A. Balandin

Due to its high charge carrier mobility, broadband light absorption, and ultrafast carrier dynamics, graphene is a promising material for the development of high-performance photodetectors. Graphene-based photodetectors have been…

Mesoscale and Nanoscale Physics · Physics 2015-02-25 Biddut K. Sarker , Isaac Childres , Edward Cazalas , Igor Jovanovic , Yong P. Chen

Flicker or 1/f noise in metal-oxide-semiconductor field-effect transistors (MOSFETs) has been identified as the main source of noise at low frequency. It often originates from an ensemble of a huge number of charges trapping and detrapping.…

Mesoscale and Nanoscale Physics · Physics 2010-10-22 N. Clement , K. Nishiguchi , A. Fujiwara , D. Vuillaume

We study the surface conductivity of a field-effect transistor (FET) made of periodic array of spherical semiconductor nanocrystals (NCs). We show that electrons introduced to NCs by the gate voltage occupy one or two layers of the array.…

Mesoscale and Nanoscale Physics · Physics 2014-06-11 K. V. Reich , Tianran Chen , B. I. Shklovskii

The deployment of a growing number of devices in Internet of Things (IoT) networks implies that uninterrupted and seamless adaptation of wireless communication parameters (e.g., carrier frequency, bandwidth and modulation) will become…

Systems and Control · Electrical Eng. & Systems 2024-07-03 Diptashree Das , Mohammad Abdi , Minghan Liu , Marvin Onabajo , Francesco Restuccia

We performed radiofrequency (RF) reflectometry measurements at 2.4 GHz on electrolyte-gated graphene field-effect transistors (GFETs) utilizing a tunable stub-matching circuit for impedance matching. We demonstrate that the gate voltage…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 W. Fu , M. El Abbassi , T. Hasler , M. Jung , M. Steinacher , M. Calame , C. Schönenberger , G. Puebla-Hellmann , S. Hellmüller , T. Ihn , A. Wallraff

Understanding of the electrical contact properties of semiconductor nanowire (NW) field effect transistors (FETs) plays a crucial role in employing semiconducting NWs as building blocks for future nanoelectronic devices and in the study of…

Mesoscale and Nanoscale Physics · Physics 2016-05-30 Dingxun Fan , N Kang , Sepideh Gorji Ghalamestani , Kimberly A Dick , H Q Xu

We report strategies of achieving both high assembly yield of carbon nanotubes at selected position of the circuit via dielectrophoresis (DEP) and field effect transistor (FET) yield using semiconducting enriched single walled carbon…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Muhammad R. Islam , Kristy J. Kormondy , Eliot Silbar , Saiful I. Khondaker

We report the dispersive readout of the spin state of a double quantum dot formed at the corner states of a silicon nanowire field-effect transistor. Two face-to-face top-gate electrodes allow us to independently tune the charge occupation…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 A. C. Betz , R. Wacquez , M. Vinet , X. Jehl , A L. Saraiva , M. Sanquer , A. J. Ferguson , M. F. Gonzalez-Zalba

We use a frequency-dependent electro-optic technique to measure the hole mobility in small molecule organic semiconductors, such as 6,13 bis(triisopropylsilylethynyl)-pentacene. Measurements are made on semiconductor films in bottom gate,…

Materials Science · Physics 2012-12-20 Emily G. Bittle , Joseph W. Brill , Joseph P. Straley

Low-dimensional materials such as layered semiconductors or carbon nanotubes (CNTs) have been attracting increasing attention in the last decades due to their inherent scaling properties, which become fundamental to sustain the scaling in…

Mesoscale and Nanoscale Physics · Physics 2019-04-23 Marta Perucchini , Enrique G. Marin , Damiano Marian , Giuseppe Iannaccone , Gianluca Fiori