Multiwavelength optical sensor based on a gradient photonic crystal with a hexagonal plasmonic array; Sensors and Actuators B: Chemical; Vol. 311

Multiwavelength optical sensor based on a gradient photonic crystal with a hexagonal plasmonic array; Sensors and Actuators B: Chemical; Vol. 311

Detalles Bibliográficos
Parent link:Sensors and Actuators B: Chemical
Vol. 311.— 2020.— [127837, 9 p.]
Corporate Authors: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий, Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Outros autores: Dedelaite L. Lina, Rodriguez (Rodriges) Contreras R. D. Raul David, Schreiber B. Benjamin, Ramanavicius A. Arunas, Zahn D. R. T. Dietrich, Sheremet E. S. Evgeniya Sergeevna
Summary:Title screen
Sensitivity and versatility are characteristics that make a sensor device attractive for wide-spread applications in everyday life. Surface-enhanced Raman spectroscopy (SERS) is capable of providing the highest sensitivity, that of single-molecule detection, and excellent specificity due to its fingerprinting capability. However, conventional SERS substrates must be optimized to operate for a particular excitation wavelength. Here in this work, we achieve for the first time multiwavelength amplification with a hybrid plasmonic/photonic heterostructure integrating a gradient photonic crystal and an Ag nanotriangle array. We demonstrate the detection of ultrathin molecular layers showing a signal amplification for the typical laser wavelengths used in Raman spectroscopy detection. By combining photonics and plasmonics in a single silicon chip, we expand multiwavelength- and spatially-selective ultra-sensitive detection to a wide range of applications from biomedicine to safety.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglés
Publicado: 2020
Subjects:
труды учёных ТПУ
электронный ресурс
optical sensor
photonics
surface-enhanced Raman spectroscopy
photonic crystal
оптические датчики
фотоника
рамановская спектроскопия
фотонные кристаллы
Acceso en liña:https://doi.org/10.1016/j.snb.2020.127837
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662455

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