Události

Abstrakt: Hexa-peri-hexabenzocoronene (HBC) core tethered with three diacetylene (DA)-containing side-chains was designed and their self-assembling behavior in solvent and on substrate was investigated. The polymerizable HBC derivatives are noted as HBC-1,3,5-Ph-DA-Cn, where 1,3,5 refers to the position of DA chain and n is the spacer length of alkyl chain. It is confirmed that the nanostructure of HBC-1,3,5-Ph-DA-Cn can be polymerized in (i) solution and (ii) film by UV-irradiation or thermal treatment. HBC-1,3,5-Ph-DA-C12 exhibits a stable hexagonal columnar phase at 47°C which was used to...

RASIRC is a division of Mitsubishi Chemical, a $50B chemical and gas company.  RASIRC is a small independent division that focuses on water vapor, hydrogen peroxide gas and hydrazine gas for atomic layer deposition and subsystem precision humidification.  We have developed the first commercial technology for delivery of hydrogen peroxide gas with minimal water vapor.  This can create ALD films that are not possible with water, ozone, or oxygen plasma.  Similarly, RASIRC has developed a proprietary formulation for delivery of hydrazine that is safer than straight hydrazine.  Our innovative...

Abstrakt:

The Telescope Array (TA) is the largest ultra-high-energy cosmic ray (UHECR) detector in the Northern Hemisphere, which explores the origin and nature of UHECRs. TA is located in Utah, consisting of an array of scintillator detectors on the ground to sample the footprint of the air shower induced by UHECRs and telescopes to measure the fluorescence and Cerenkov light of the air shower. TA determines the energy spectrum and chemical composition of the primary particles, and also searches for anisotropy of arrival directions of UHECRs and their sources. We have...

Recent interest in functionalised graphene has been motivated by the prospect of creating a two-dimensional semiconductor with a tunable band gap. Various approaches to band gap engineering have been made over the last decade, one of which is chemical functionalisation. In this work, a predictive physical model of the self-assembly of halogenated carbene layers on graphene is suggested. Self-assembly of the adsorbed layer is found to be governed by a combination of the curvature of the graphene sheet, local distortions, as introduced by molecular adsorption, and short-range intermolecular...