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Geração e manipulação de ondas terahertz em derivados de carbono

Geração e manipulação de ondas terahertz em derivados de carbono

Muhammad Irfan

51,89 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Física
ISBN:
9786208590925
51,89 €
IVA incluido
Disponible
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Os nanomateriais à base de carbono são novos elementos fascinantes para a geração, modulação e deteção de ondas electromagnéticas de terahertz (THz). A emissão amplificada prevista nesta gama espetral a partir do grafeno ainda não foi observada, enquanto a dispersão energética linear do grafeno monoatómico restringe as acelerações electrónicas. Por outro lado, no caso da grafite, a engenharia do nível de Fermi revela-se útil para modificar os transportes eléctricos através da dopagem e dos desvios da função de trabalho interfacial. Em particular, a engenharia da função de trabalho entre o ar, a grafite e os metais permitiu um caminho viável para afinar os perfis de energia grafítica e manipular as caraterísticas da radiação THz. As novas estruturas de grafeno funcionalizado foram sintetizadas, por exemplo, grafeno holey com átomos de azoto adicionados ao grafeno convencional e podem ser úteis para controlar as propriedades de transporte.

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