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1.
Nano Lett ; 17(8): 4970-4975, 2017 08 09.
Artigo em Inglês | MEDLINE | ID: mdl-28678509

RESUMO

The lack of large-area synthesis processes on substrates compatible with industry requirements has been one of the major hurdles facing the integration of 2D materials in mainstream technologies. This is particularly the case for the recently discovered monoelemental group V 2D materials which can only be produced by exfoliation or growth on exotic substrates. Herein, to overcome this limitation, we demonstrate a scalable method to synthesize antimonene on germanium substrates using solid-source molecular beam epitaxy. This emerging 2D material has been attracting a great deal of attention due to its high environmental stability and its outstanding optical and electronic properties. In situ low energy electron microscopy allowed the real time investigation and optimization of the 2D growth. Theoretical calculations combined with atomic-scale microscopic and spectroscopic measurements demonstrated that the grown antimonene sheets are of high crystalline quality, interact weakly with germanium, exhibit semimetallic characteristics, and remain stable under ambient conditions. This achievement paves the way for the integration of antimonene in innovative nanoscale and quantum technologies compatible with the current semiconductor manufacturing.

2.
Phys Rev Lett ; 119(7): 079903, 2017 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-28949658

RESUMO

This corrects the article DOI: 10.1103/PhysRevLett.116.185501.

3.
Phys Rev Lett ; 117(27): 276101, 2016 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-28084777

RESUMO

We report a systematic lattice dynamics study of EuSi_{2} films and nanoislands by in situ nuclear inelastic scattering on ^{151}Eu and ab initio theory. The Eu-partial phonon density of states of the nanoislands exhibits anomalous excess of phonon states at low and high energies, not present in the bulk and at the EuSi_{2}(001) surface. We demonstrate that atomic vibrations along the island-substrate interface give rise to phonon states both at low and high energies, while atomic vibrations across the island-island interface result in localized high-energy phonon modes.

4.
Phys Rev Lett ; 116(18): 185501, 2016 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-27203332

RESUMO

Comprehensive studies of lattice dynamics in the ferromagnetic semiconductor EuO have been performed by a combination of inelastic x-ray scattering, nuclear inelastic scattering, and ab initio calculations. A remarkably large broadening of the transverse acoustic phonons was discovered at temperatures above and below the Curie temperature T_{C}=69 K. This result indicates a surprisingly strong momentum-dependent spin-phonon coupling induced by the spin dynamics in EuO.

5.
Br J Perioper Nurs ; 10(8): 412-6, 2000 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11261006

RESUMO

What sort of relationship do you have with your Sterile Services Department? Do you know what goes on in that department? Do their staff know what goes on in your department? In making a strong case for recognised training in Sterile Services, Olivia and Frank Waller see an exchange of experiences between operating theatres and SSD as a valuable part of the learning process. Too often separate departments only contact each other when things go wrong. The authors quote a damning judgement from an enquiry following the death of five patients: a powerful reminder of the fact that perioperative care gives only one chance to get it right. Just because you work in theatre does not mean you can ignore or take for granted those departments on which you rely for supplies and services. Get involved, find out and understand what they can do for you and what you can do for them.


Assuntos
Almoxarifado Central Hospitalar/organização & administração , Educação Continuada em Enfermagem/organização & administração , Capacitação em Serviço/organização & administração , Relações Interdepartamentais , Recursos Humanos de Enfermagem Hospitalar/educação , Enfermagem de Centro Cirúrgico/educação , Humanos , Controle de Infecções , Avaliação das Necessidades , Enfermeiros Administradores/educação
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