Search Results - "Culbertson, James"
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Synthesis of Large-Area WS2 monolayers with Exceptional Photoluminescence
Published in Scientific reports (13-01-2016)“…Monolayer WS 2 offers great promise for use in optical devices due to its direct bandgap and high photoluminescence intensity. While fundamental investigations…”
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Properties of Fluorinated Graphene Films
Published in Nano letters (11-08-2010)“…Graphene films grown on Cu foils have been fluorinated with xenon difluoride (XeF2) gas on one or both sides. When exposed on one side the F coverage saturates…”
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Multimillimeter-sized cubic boron arsenide grown by chemical vapor transport via a tellurium tetraiodide transport agent
Published in Applied physics letters (25-06-2018)“…Cubic boron arsenide (c-BAs) has been predicted to exhibit thermal conductivity values around 1400 W/m-K at room temperature by first-principles calculations…”
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4
Acoustic cavities in 2D heterostructures
Published in Nature communications (01-06-2021)“…Two-dimensional (2D) materials offer unique opportunities in engineering the ultrafast spatiotemporal response of composite nanomechanical structures. In this…”
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Nitrogen-Doped Graphene and Twisted Bilayer Graphene via Hyperthermal Ion Implantation with Depth Control
Published in ACS nano (22-03-2016)“…We investigate hyperthermal ion implantation (HyTII) as a means for substitutionally doping layered materials such as graphene. In particular, this systematic…”
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Impurity-derived p-type conductivity in cubic boron arsenide
Published in Applied physics letters (17-12-2018)“…Cubic boron arsenide (c-BAs) exhibits an ultrahigh thermal conductivity (κ) approaching 1300 Wm−1 K−1 at room temperature. However, c-BAs is believed to…”
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Evidence for Chemical Vapor Induced 2H to 1T Phase Transition in MoX2 (X = Se, S) Transition Metal Dichalcogenide Films
Published in Scientific reports (19-06-2017)“…Electron-donors can impart charge to the surface of transition metal dichalcogenide (TMD) films while interacting with the film via a weak physisorption bond,…”
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Electronic Hybridization of Large-Area Stacked Graphene Films
Published in ACS nano (22-01-2013)“…Direct, tunable coupling between individually assembled graphene layers is a next step toward designer two-dimensional (2D) crystal systems, with relevance for…”
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Room-Temperature Spin Filtering in Metallic Ferromagnet–Multilayer Graphene–Ferromagnet Junctions
Published in ACS nano (22-11-2016)“…We report room-temperature negative magnetoresistance in ferromagnet–graphene–ferromagnet (FM|Gr|FM) junctions with minority spin polarization exceeding 80%,…”
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Internal friction measurements of low energy excitations in amorphous germanium thin films
Published in Journal of alloys and compounds (05-03-2021)“…Motivated to create a germanium analog to nearly two-level-tunneling-system (TLS)-free amorphous silicon, six germanium films, all about 350 nm thick, were…”
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Quantum Linear Magnetoresistance in Multilayer Epitaxial Graphene
Published in Nano letters (13-10-2010)“…We report the first observation of linear magnetoresistance (LMR) in multilayer epitaxial graphene grown on SiC. We show that multilayer epitaxial graphene…”
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Technique for the Dry Transfer of Epitaxial Graphene onto Arbitrary Substrates
Published in ACS nano (23-02-2010)“…To make graphene technologically viable, the transfer of graphene films to substrates appropriate for specific applications is required. We demonstrate the dry…”
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Work Function Variations in Twisted Graphene Layers
Published in Scientific reports (31-01-2018)“…By combining optical imaging, Raman spectroscopy, kelvin probe force microscopy (KFPM), and photoemission electron microscopy (PEEM), we show that graphene’s…”
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Graphene Strained by Defects
Published in ACS nano (23-05-2017)“…Using graphene nanomechanical resonators we demonstrate the extent to which the mechanical properties of multilayer graphene films are controllable, in real…”
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Non-lithographic SERS Substrates: Tailoring Surface Chemistry for Au Nanoparticle Cluster Assembly
Published in Small (Weinheim an der Bergstrasse, Germany) (23-07-2012)“…Near‐field plasmonic coupling and local field enhancement in metal nanoarchitectures, such as arrangements of nanoparticle clusters, have application in many…”
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Enabling remote quantum emission in 2D semiconductors via porous metallic networks
Published in Nature communications (07-01-2020)“…Here we report how two-dimensional crystal (2DC) overlayers influence the recrystallization of relatively thick metal films and the subsequent synergetic…”
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Characterization of Defects in GaN: Optical and Magnetic Resonance Techniques
Published in Crystals (Basel) (01-09-2022)“…GaN and its alloys with InN and AlN are of technological importance for a variety of optical, electronic, and optoelectronic devices due to its high thermal…”
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Gas-pressure chemical vapor transport growth of millimeter-sized c-BAs single crystals with moderate thermal conductivity
Published in Applied physics letters (11-06-2018)“…We have grown c-BAs single crystals up to 1000 μm size by the chemical vapor transport (CVT) technique using combined As and I2 transport agents with the As:I…”
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Raman signature of defected twisted bilayer graphene
Published in Carbon (New York) (01-11-2015)“…Layered two-dimensional crystal systems can exhibit complex interlayer interactions, which are influenced by local crystal structure and/or electronic…”
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Engineering Graphene Mechanical Systems
Published in Nano letters (08-08-2012)“…We report a method to introduce direct bonding between graphene platelets that enables the transformation of a multilayer chemically modified graphene (CMG)…”
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