Particles comprising hollow surface-enhanced spectroscopy (SES)-active core for long wavelength SERS

US9239327B2 · kind B2 · utility

Assignee

• SICPA HOLDING SA · CH

Inventors

• Michael J. Natan · Los Altos, US
• Richard Griffith Freeman · Mountain View, US
• Marcelo Piotti · Fremont, US
• William E. Doering · Santa Clara, US
• Felicia Tam · Sunnyvale, US

Key dates

• Filing date: May 18, 2010
• Grant date: Jan 19, 2016
• Expiry date: May 28, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/28
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Embodiments include a particle comprising a surface enhanced spectroscopy (SES)-active core and a SES-active reporter molecule associated with the SES-active core wherein said particle has a measurable SES spectrum when excited by incident light having a wavelength of at least 1400 nm. Alternative embodiments include methods of manufacturing said particle and methods of tagging a material with said particle. The particle may include an SES-active core which supports plasmon resonance at a wavelength of at least 1400 nm. The particle may comprise an anisotropic core. The particle may include an SES-active reporter molecule which is resonant at one or more wavelengths greater than or equal to 1400 nm.