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In this work an electron radiation detector microdevices were fabricated and characterized. The devices consisted of a conductive electrospun mat made of polycaprolactone loaded with multiwalled carbon nanotubes and fullerene C60 deposited…

We probe the local inhomogeneities of the electronic properties of graphene at the nanoscale using scanning probe microscopy techniques. First, we focus on the study of the electronic inhomogeneities caused by the graphene-substrate…

Mesoscale and Nanoscale Physics · Physics 2012-10-16 A. Castellanos-Gomez , Arramel , M. Wojtaszek , R. H. M. Smit , N. Tombros , N. Agraït , B. J. van Wees , G. Rubio-Bollinger

Inkjet-printed wearable electronic textiles (e-textiles) are considered to be very promising due to excellent processing and environmental benefits offered by digital fabrication technique. Inkjet-printing of conductive metallic inks such…

Applied Physics · Physics 2019-05-03 Nazmul Karim , Shaila Afroj , Sirui Tan , Kostya S. Novoselov , Stephen G. Yeates

We report on the fabrication and characterization of an optimized comb-drive actuator design for strain-dependent transport measurements on suspended graphene. We fabricate devices from highly p-doped silicon using deep reactive ion etching…

Applied Physics · Physics 2018-07-23 M. Goldsche , G. J. Verbiest , T. Khodkov , J. Sonntag , N. von den Driesch , D. Buca , C. Stampfer

We investigate the conductivity of graphene sheet deformed over a gate. The effect of the deformation on the conductivity is twofold: The lattice distortion can be represented as pseudovector potential in the Dirac equation formalism,…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 M. V. Medvedyeva , Ya. M. Blanter

The use of graphene in a form of discontinuous flakes in polymer composites limits the full exploitation of the unique properties of graphene, thus requiring high filler loadings for achieving - for example - satisfactory electrical and…

We report the results of an experimental study of thermal and magnetic properties of nanostructured ferrimagnetic iron oxide composites with graphene and graphite fillers synthesized via the current activated pressure assisted…

Materials Science · Physics 2017-10-19 S. Ramirez , K. Chan , R. Hernandez , E. Recinos , E. Hernandez , R. Salgado , A. G. Khitun , J. E. Garay , A. A. Balandin

Graphene is considered a promising candidate to replace conventional transparent conductors due to its low opacity, high carrier mobility and flexible structure. Multi-layer graphene or stacked single layer graphenes have been investigated…

Mesoscale and Nanoscale Physics · Physics 2011-12-07 Seunghyun Lee , Kyunghoon Lee , Chang-Hua Liu , Zhaohui Zhong

Condensation of water on metallic surfaces is critical for multiple energy conversion processes. Enhancement in condensation heat transfer efficiency often requires surface texturing and hydrophobicity, usually achieved through coatings, to…

Friction-induced energy dissipation impedes the performance of nanoscale devices during their relative motion. Nevertheless, an ingeniously designed structure which utilizes graphene topping can tune the friction force signal by inducing…

The advances in micro-size and in-plane supercapacitors lead to produce the miniaturizing energy storage devices in portable and bendable electronics. Micro-supercapacitors have unique electrochemical performance, such as high power…

Applied Physics · Physics 2020-01-22 Katayoon Gholami laelabadi , Rostam Moradian , Iraj Manouchehri

Graphite has been one of the promising materials in diverse application domains owing to its high conductivity, tunability into different structures and mechanical strength its. The effectiveness of graphite and its derivatives has been…

Applied Physics · Physics 2018-06-06 Amit R. Morarka , Aditee C. Joshi

Flexible pressure sensors are an attractive area of research due to their potential applications in biomedical sensing and wearable devices. Among flexible and wearable pressure sensors, capacitive pressure sensors show significant…

Applied Physics · Physics 2021-11-12 Lekshmi A. Kurup , Cameron M. Cole , Joshua N. Arthur , Soniya D. Yambem

We report on the thermal and electrical properties of hybrid epoxy composites with graphene and boron nitride fillers. The thicknesses, lateral dimensions, and aspect ratios of each filler material were intentionally selected for geometric…

Ni(OH)2 nanocrystals grown on graphene sheets with various degrees of oxidation are investigated as electrochemical pseudocapacitor materials for potential energy storage applications. Single-crystalline Ni(OH)2 hexagonal nanoplates…

Materials Science · Physics 2010-05-07 Hailiang Wang , Hernan Sanchez Casalongue , Yongye Liang , Hongjie Dai

A thin conducting sheet - graphene, for example - transmits, absorbs, and reflects radiation. A sheet that is very thin, even vanishingly so, can still produce 50% absorption at normal incidence if it has conductivity corresponding to half…

Mesoscale and Nanoscale Physics · Physics 2017-03-13 Matthew Mecklenburg , B. C. Regan

The extremely high thermal conductivity of graphene has received great attention both in experiments and calculations. Obviously, new feature in thermal properties is of primary importance for application of graphene-based materials in…

Materials Science · Physics 2018-08-10 Haifei Zhan , Gang Zhang , Chunhui Yang , Yuantong Gu

We demonstrate tunable solid state and flexible graphene field effect devices (FEDs) fabricated using a poly(methylmethacrylate) (PMMA) and lithium fluoride (LiF) composite dielectric. Increasing the concentration of LiF in the composite…

Mesoscale and Nanoscale Physics · Physics 2016-05-03 Arunandan Kumar , Priyanka Tyagi , Ritu Srivastava

We report macroscopic sheets of highly conductive bilayer graphene with exceptionally high hole concentrations of ~ $10^{15}$ $cm^{-2}$ and unprecedented sheet resistances of 20-25 {\Omega} per square over macroscopic scales, and obtained…

We demonstrate a fabrication scheme for clean suspended structures using chemical-vapor-deposition-grown graphene and a dry transfer method on lift-off-resist-coated substrates to facilitate suspended graphene nanoelectronic devices for…

Mesoscale and Nanoscale Physics · Physics 2019-05-22 Ying Liu , T. S. Abhilash , Antti Laitinen , Zhenbing Tan , Guan-jun Liu , Pertti Hakonen