High-speed integrated optical logic based on the protein bacteriorhodopsin

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Anna Mathesz (Autor) Outra; Laszlo Fabian (Autor) Outra; Sandor Valkai (Autor) Outra; Daniel Alexandre (Autor) Outra; Paulo V S Marques (Autor) FCUP; Pal Ormos (Autor) Outra; Elmar K Wolff (Autor) Outra; Andras Der (Autor) Outra

Revista

Título: Biosensors and Bioelectronics

Vol. 46

Páginas: 48-52

ISSN: 0956-5663

Editora: Elsevier

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 19 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Nanotecnologia

Outras Informações

ID Authenticus: P-004-ZQE

DOI: 10.1016/j.bios.2013.02.022

Abstract (EN): The principle of all-optical logical operations utilizing the unique nonlinear optical properties of a protein was demonstrated by a logic gate constructed from an integrated optical Mach-Zehnder interferometer as a passive structure, covered by a bacteriorhodopsin (bR) adlayer as the active element. Logical operations were based on a reversible change of the refractive index of the bR adlayer over one or both arms of the interferometer. Depending on the operating point of the interferometer, we demonstrated binary and ternary logical modes of operation. Using an ultrafast transition of the bR photocycle (BR-K), we achieved high-speed (nanosecond) logical switching. This is the fastest operation of a protein-based integrated optical logic gate that has been demonstrated so far. The results are expected to have important implications for finding novel, alternative solutions in all-optical data processing research.

Idioma: Inglês

Tipo (Avaliação Docente): Científica