Measurement of circular intensity differential scattering (CIDS) from single airborne aerosol particles for bioaerosol detection and identification.
Opt Express
; 30(2): 1442-1451, 2022 Jan 17.
Article
en En
| MEDLINE
| ID: mdl-35209304
ABSTRACT
The circular intensity differential scattering (CIDS), i.e. the normalized Mueller matrix element -S14/S11, can be used to detect the helical structures of DNA molecules in biological systems, however, no CIDS measurement from single particles has been reported to date. We report an innovative method for measuring CIDS phase functions from single particles individually flowing through a scattering laser beam. CIDS signals were obtained from polystyrene latex (PSL) microspheres with or without coating of DNA molecules, tryptophan particles, and aggregates of B. subtilis spores, at the size of 3â
µm in diameter. Preliminary results show that this method is able to measure CIDS phase function in tens of microseconds from single particles, and has the ability to identify particles containing biological molecules.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Poliestirenos
/
Bacillus subtilis
/
Triptófano
/
Monitoreo del Ambiente
/
Material Particulado
/
Partículas y Gotitas de Aerosol
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2022
Tipo del documento:
Article