Optical Detection of core-gold nanoshells inside biosystems

• Autorzy: Mario D’Acunto , Simone Dinarelli , Antonio Cricenti , Marco Luce
• Języki publikacji: EN

Abstrakty

EN

Metal nanoshells having a dielectric core with a thin gold layer are generating new interest due to the unique optical, electric and magnetic properties exhibited by the local field enhancement near the metal – dielectric core interface. These nanoshells possess strong, highly tunable local plasmon resonances with frequencies dependent upon the nanoshell shape and core material. These unique characteristics have applications in biosensing, optical communication and medicine. In this paper, we developed a theoretical, numerical and experimental approach based on a scanning near optical microscope to identify nanoshells inside mouse cells. Taking advantage of the characteristic near-infrared transparency window of many biological systems, i.e. the low light absorption coefficient of biological systems between 750−1100 nm, we were able to identify a 100−150 nm diameter barium titanate-gold nanoshell inside the h9c2 mouse cells.

Słowa kluczowe

EN

Near-Field; SNOM; core-gold nanoshells; nearinfrared; tissue transparency window; h9c2 mouse cell

• Czasopismo: Nanospectroscopy
• Rocznik: 2014
• Tom: 1
• Numer: 1

Daty

otrzymano

2015-08-15

zaakceptowano

2015-10-23

online

2016-02-03

Twórcy

autor

Mario D’Acunto

• Istituto di Scienza e
  Tecnologie dell’Informazione, Consoglio Nazionale delle Ricerche,
  ISTI-CNR, Via G.Moruzzi 1, I-56124, Pisa, Italy, NanoICT Laboratory,
  Area della Ricerca CNR, via G. Moruzzi 1, I-56124, Pisa, Italy
• Istituto
  di Struttura della Materia, Consiglio Nazionale delle Ricerche,
  ISM-CNR, Via Fosso del Cavaliere, 100, I-00133, Rome, Italy

autor

Simone Dinarelli

• Istituto
  di Struttura della Materia, Consiglio Nazionale delle Ricerche,
  ISM-CNR, Via Fosso del Cavaliere, 100, I-00133, Rome, Italy

autor

Antonio Cricenti

• Istituto
  di Struttura della Materia, Consiglio Nazionale delle Ricerche,
  ISM-CNR, Via Fosso del Cavaliere, 100, I-00133, Rome, Italy

autor

Marco Luce

• Istituto
  di Struttura della Materia, Consiglio Nazionale delle Ricerche,
  ISM-CNR, Via Fosso del Cavaliere, 100, I-00133, Rome, Italy

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Identyfikatory

DOI

10.1515/nansp-2015-0007