On the mechanism for plasma hydrogenation of graphene

Abstract

Strength of hydrogen bonds of water depends on local environment J. Chem. Phys. 136, 144305 (2012) Modeling of an ionic liquid electrospray using molecular dynamics with constraints J. Chem. Phys. 136, 124507 (2012) Epitaxial oxide bilayer on Pt (001)

The effect of electron induced hydrogenation of graphene on its electrical transport properties

“…26 In that experiment, energetic electrons break Si-H bonds in HSQ, and the hydrogen generated during the irradiation is then bound to graphene. Another experiment 27 proposed that graphene could be hydrogenated due to fragmentation of H 2 O adsorbates on graphene by exposing it to an electron beam. Therefore, we argue that the Raman "D" peak, which appears after electron irradiation on the PMMA/graphene bilayer and subsequent removal of PMMA, is ascribed to the adsorption of fragmented hydrogen molecules or radicals from PMMA during the back bone secession process on top of graphene.…”

Community psychology in Europe: More needed, less wanted?

“…We use a capacitively coupled RF plasma system operating at 19–21 MHz and 50 W. A detailed description of the plasma system is given elsewhere 20. Plasma exposures are carried out within a stainless steel chamber.…”

“…Plasma exposures are carried out within a stainless steel chamber. With the sample floating, there is a voltage of about 25 V between the sample and chamber due to plasma sheathes 20. An overwhelming majority of the species in a He plasma consists of He atoms, metastable helium atoms (He*), helium ions (He + ), dimer helium metastable atoms (He 2 *), dimer helium metastable ions (He 2 + ), and electrons 21–23.…”

Re-print of “Sub-eV Ion Deposition Utilizing Soft-Landing Ion Mobility for Controlled Ion, Ion Cluster, and Charged Nanoparticle Deposition”

“…Upon completion of exfoliation the graphene samples were examined by optical microscopy to determine the spatial orientation of the graphene. Pristine samples were then studied using micro-Raman spectroscopy with 532 nm incident radiation and the presence of monolayer graphene (MLG) was confirmed by the ratio of I G /I Si [40,41] as seen in Fig. S1 of the Supplementary data.…”