Trapping double negative particles in the ray optics regime using optical tweezers with focused beams

Autor(es)

Ambrosio, Leonardo Andre ^[1] ; Hernandez-Figueroa, H. E. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, DMO, Sch Elect & Comp Engn FEEC, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Optics Express; v. 17, n. 24, p. 21918-21924, NOV 23 2009.
• Citações Web of Science: 10

Resumo

The capabilities of optical tweezers to trap DNG (double negative) spherical particles, with both negative permittivity and permeability, are explored in detail by analyzing some interesting theoretical features not seeing in conventional DPS (double positive) particles possessing positive refractive index. The ray optics regime is adopted and, although this regime is quite simple and limited, its validity is already known and tested for DPS particles such as biological cells and molecules trapped by highly focused beams. Simulation results confirm that even for ray optics, DNG particles present unusual and interesting trapping characteristics. (C) 2009 Optical Society of America (AU)

• Processo FAPESP: 05/51689-2 - Centro de Pesquisa em Óptica e Fotônica - UNICAMP (CEPOF-UNICAMP)
• Beneficiário: Hugo Luis Fragnito
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 05/54265-9 - Ondas localizadas aplicadas a comunicações ópticas no espaço livre
• Beneficiário: Leonardo Andre Ambrosio
• Modalidade de apoio: Bolsas no Brasil - Doutorado