Results 31 to 40 of about 8,906 (184)

Crystal structure of 2-(azaniumylmethyl)pyridinium bis(hydrogen squarate)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The asymmetric unit of the title compound, C6H10N22+·2C4HO4−, comprises two hydrogen squarate (Hsq−; systematic name: 2-hydroxy-3,4-dioxocyclobutanolate) anions and a 2-(azaniumylmethyl)pyridinium dication.
Nina Salamzadeh   +3 more
doaj   +1 more source

Exploiting atomic layer deposition for fabricating sub-10 nm X-ray lenses

open access: yes, 2018
Moving towards significantly smaller nanostructures, direct structuring techniques such as electron beam lithography approach fundamental limitations in feature size and aspect ratios.
Belkhou, Rachid   +14 more
core   +1 more source

Resist-substrate interface tailoring for generating high density arrays of Ge and Bi2Se3 nanowires by electron beam lithography [PDF]

open access: yes, 2012
The authors report a chemical process to remove the native oxide on Ge and Bi2Se3 crystals, thus facilitating high-resolution electron beam lithography (EBL) on their surfaces using a hydrogen silsesquioxane (HSQ) resist.
Bolger, Ciara T.   +12 more
core   +1 more source

Design and fabrication of densely integrated silicon quantum dots using a VLSI compatible hydrogen silsesquioxane electron beam lithography process

open access: yes, 2012
Hydrogen silsesquioxane (HSQ) is a high resolution negative-tone electron beam resist allowing for direct transfer of nanostructures into silicon-on-insulator.
A.J. Ferguson   +21 more
core   +1 more source

Spectral Invariance of Non-Smooth Pseudodifferential Operators

open access: yes, 2016
In this paper we discuss some spectral invariance results for non-smooth pseudodifferential operators with coefficients in H\"older spaces. In analogy to the proof in the smooth case of Beals and Ueberberg, we use the characterization of non-smooth ...
Abels, Helmut, Pfeuffer, Christine
core   +1 more source

Plasmon transport in graphene investigated by time-resolved measurement [PDF]

open access: yes, 2012
Plasmons, which are collective charge oscillations, offer the potential to use optical signals in nano-scale electric circuits. Recently, plasmonics using graphene have attracted interest, particularly because of the tunable plasmon frequency through the
Fujisawa, T.   +6 more
core   +2 more sources

Effects of Acute Hypoxia on Early Visual and Auditory Evoked Potentials

open access: yesFrontiers in Neuroscience, 2022
Reduced levels of environmental oxygen lead to hypoxic hypoxia and are a primary threat in tactical aviation. The visual system is particularly vulnerable to hypoxia, and its impairment can severely impact performance.
Kara J. Blacker, Daniel G. McHail
doaj   +1 more source

Band-edge Bilayer Plasmonic Nanostructure for Surface Enhanced Raman Spectroscopy

open access: yes, 2015
Spectroscopic analysis of large biomolecules is critical in a number of applications, including medical diagnostics and label-free biosensing. Recently, it has been shown that Raman spectroscopy of proteins can be used to diagnose some diseases ...
Adibi, Ali   +3 more
core   +2 more sources

Tsallis' deformation parameter q quantifies the classical-quantum transition [PDF]

open access: yes, 2008
We investigate the classical limit of a type of semiclassical evolution, the pertinent system representing the interaction between matter and a given field. On using as a quantifier of the ensuing dynamics Tsallis q-entropy, we encounter that it not only
Kowalski, A. M.   +3 more
core   +3 more sources

Validation of a health screening questionnaire for primary care using Rasch models

open access: yesJournal of Patient-Reported Outcomes, 2019
Background Health inequality is on the rise due to various social and individual factors. While preventive health checks (PHC) aim to counteract health inequality, there is robust evidence against the use of PHC in general practice.
Jonathan David Comins   +4 more
doaj   +1 more source

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