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Related papers: Graphene Transfer with Reduced Residue

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Scientists are always yearning for new and exciting ways to unlock graphene's true potential. However, recent reports suggest this two-dimensional material may harbor some unique properties, making it a viable candidate for use in…

Materials Science · Physics 2014-06-04 F. V. Kusmartsev , W. M. Wu , M. P. Pierpoint , K. C. Yung

Two-dimensional materials represented by graphene and transition metal dichalcogenides undergo charge transfer (CT) processes and become hole-doped in strong mineral acids. Nonetheless, their mechanisms remain unclear or controversial. This…

Materials Science · Physics 2021-10-06 Kwnaghee Park , Sunmin Ryu

Owing to wide variety of applications of graphene, high-quality and economical way of synthesizing graphene is highly desirable. In this study, we report a cost effective and simple approach to production of high-quality graphene. Here the…

Materials Science · Physics 2013-10-29 Prashant Tripathi , Ch. Ravi Prakash Patel , M. A. Shaz , O. N. Srivastava

We report a method that uses van der Waals interactions to transfer continuous, high-quality graphene films from Ge(110) to a different substrate held by hexagonal boron nitride carriers in a clean, dry environment. The transferred films…

Graphene - a monolayer of carbon atoms densely packed into a hexagonal lattice - has one of the strongest possible atomic bonds and can be viewed as a robust atomic-scale scaffold, to which other chemical species can be attached without…

Graphene grown via chemical vapour deposition (CVD) on copper foil has emerged as a high-quality, scalable material, that can be easily integrated on technologically relevant platforms to develop promising applications in the fields of…

Electrochemical exfoliation is one of the most promising methods for scalable production of graphene. However, limited understanding of its Raman spectrum as well as lack of measurement standards for graphene strongly limit its industrial…

We show that by using an original method, bulk graphite can be bonded onto borosilicate glass or potentially any insulating substrate with ionic conductivity and then cleaved off to leave single or few layer graphene on the substrate,…

Materials Science · Physics 2009-04-06 Abhay Shukla , Rakesh Kumar , Javed Mazher , Adrian Balan

Thousands of tons of isotopic mixtures are processed annually for heavy-water production and tritium decontamination. The existing technologies remain extremely energy intensive and require large capital investments. New approaches are…

Materials Science · Physics 2017-05-18 M. Lozada-Hidalgo , S. Zhang , S. Hu , A. Esfandiar , I. V. Grigorieva , A. K. Geim

Controlled placement of nanomaterials at predefined locations with nanoscale precision remains among the most challenging problems that inhibit their large-scale integration in the field of semiconductor process technology. Methods based on…

Nano-holes, etched under an electron beam at room temperature in singlelayer graphene sheets as a result of their interaction with metalimpurities, are shown to heal spontaneously by filling up with either non-hexagon, graphene-like, or…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Recep Zan , Quentin M. Ramasse , Ursel Bangert , Konstantin S. Novoselov

We demonstrate a method by which few-layer graphene samples can be etched along crystallographic axes by thermally activated metallic nanoparticles. The technique results in long (>1 micron) crystallographic edges etched through to the…

Materials Science · Physics 2009-05-08 Sujit S. Datta , Douglas R. Strachan , Samuel M. Khamis , A. T. Charlie Johnson

Single-layer graphene structures and devices are commonly defined using reactive ion etching and plasma etching with O2 or Ar as the gaseous etchants. Although optical microscopy and Raman spectroscopy are widely used to determine the…

Materials Science · Physics 2013-05-21 Mariana C. Prado , Deep Jariwala , Tobin J. Marks , Mark C. Hersam

High surface area graphene sheets were obtained by electrochemical exfoliation of graphite in an acid media under constant potential conditions. Filtration and centrifugation processes played an important role in order to obtain stable…

Materials Science · Physics 2016-06-22 M. Hurtado-Morales , M. Ortiz , C. Acuna , H. C. Nerl , V. Nicolosi , Y. Hernandez

The speed of silicon-based transistors has reached an impasse in the recent decade, primarily due to scaling techniques and the short-channel effect. Conversely, graphene (a revolutionary new material possessing an atomic thickness) has…

Materials Science · Physics 2013-09-03 K. C. Yung , W. M. Wu , M. P. Pierpoint , F. V. Kusmartsev

Graphene is only one atom thick, optically transparent, chemically inert and an excellent conductor. These properties seem to make this material an excellent candidate for applications in various photonic devices that require conducting but…

Graphene is a promising candidate to succeed silicon based devices and doping holds the key to graphene electronics. Conventional doping methods through surface functionalization or lattice modification are effective in tuning carrier…

Mesoscale and Nanoscale Physics · Physics 2016-11-16 Yangbo Zhou , Jakub Jadwiszczak , Darragh Keane , Ying Chen , Dapeng Yu , Hongzhou Zhang

The industrial realization of graphene has so far been limited by challenges related to the quality, reproducibility, and high process temperatures required to manufacture graphene on suitable substrates. We demonstrate that epitaxial…

We present a safe, clean, convenient, and easy-to-control method for extensive fluorination of graphene using laser-ablation-assisted decomposition of gaseous SF6 molecules.

Materials Science · Physics 2021-07-19 Jan Plsek , Karolina Anna Drogowska , Michaela Fridrichov , Jana Vejpravova , Martin Kalbac

Patterned graphene shows substantial potential for applications in future molecular-scale integrated electronics. Environmental effects are a critical issue in a single layer material where every atom is on the surface. Especially…