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Optical Tweezing Terahertz Probing for a Single Metal Nanoparticle.
Rhie, Jiyeah; Lee, Dukhyung; Kim, Taehoon; Kim, Seonghun; Seo, Minah; Kim, Dai-Sik; Bahk, Young-Mi.
Afiliación
  • Rhie J; Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea.
  • Lee D; Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
  • Kim T; Department of Physics, Incheon National University, Incheon 22012, Republic of Korea.
  • Kim S; Department of Physics, Incheon National University, Incheon 22012, Republic of Korea.
  • Seo M; Sensor System Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea.
  • Kim DS; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea.
  • Bahk YM; Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea.
Nano Lett ; 24(22): 6753-6760, 2024 Jun 05.
Article en En | MEDLINE | ID: mdl-38708988
ABSTRACT
Recently, extensive research has been reported on the detection of metal nanoparticles using terahertz waves, due to their potential for efficient and nondestructive detection of chemical and biological samples without labeling. Resonant terahertz nanoantennas can be used to detect a small amount of molecules whose vibrational modes are in the terahertz frequency range with high sensitivity. However, the positioning of target molecules is critical to obtaining a reasonable signal because the field distribution is inhomogeneous over the antenna structure. Here, we combine an optical tweezing technique and terahertz spectroscopy based on nanoplasmonics, resulting in extensive controllable tweezing and sensitive detection at the same time. We observed optical tweezing of a gold nanoparticle and detected it with terahertz waves by using a single bowtie nanoantenna. Furthermore, the calculations confirm that molecular fingerprinting is possible by using our technique. This study will be a prestep of biomolecular detection using gold nanoparticles in terahertz spectroscopy.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos