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1.
RSC Adv ; 14(3): 1803-1812, 2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-38192312

RESUMO

Efficient identification of volatile organic compounds (VOCs) is essential for the rapid diagnostication of respiratory diseases. By detecting specific biomarkers associated with different pathologies one may distinguish between tuberculosis, nosocomial pneumonia, Aspergillus fumigatus, influenza and SARS-CoV-2 virus infections. Phosphorene and MoS2 are potential candidates from the class of 2D graphene-like materials, which can be used as active layers for sensing elements. However, as the target molecules poorly adhere to the pristine layers, binding centers are created by introducing substitutional impurities. The adsorbed VOCs induce modifications in the electrical properties of the customized active layers. For each biomarker and a sequence of substitutional impurities, a pattern of conductivities is obtained, which enables the detection of an unknown test specimen. Exploring multiple biosensor configurations we find an optimal design yielding a considerable selectivity for the five biomarker compounds.

2.
MethodsX ; 8: 101388, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34430284

RESUMO

The Bardeen-Cooper-Schrieffer (BCS) theory of superconductivity has been revisited in a series of papers [1], [2], [3] and in this context the equation for the energy gap was generalized to a system of integral equations. The physical consequences of this change are major, leading not only to the change of the critical temperature and of energy gap, but even to a change of the order of the phase transition and to multiple solutions for the energy gap. Nevertheless, finding the solutions of the proposed system of equations is much more complicated than solving the typical BCS gap equation and requires a careful analysis. This analysis is done here and consists of the following steps:•writing the system of equations at finite temperature ( k B T comparable with the energy gap Δ ) and in the low temperature limit ( k B T ≪ Δ );•separate analysis of the equations and of their solutions in the two temperature ranges, (first) k B T ≪ Δ and (second) k B T comparable with Δ ;•presenting the methods to consistenlty searching the solutions.

3.
Phys Rev Lett ; 104(19): 198901; author reply 198902, 2010 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-20867008
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