Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Matthew B. Hart"'
Autor:
Vasanthi Sivaprakasam, Matthew B. Hart
Publikováno v:
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
Externí odkaz:
https://doaj.org/article/ef1d23cf87a740ff9025ff2e05b378f8
Publikováno v:
Optical Components and Materials XX.
Autor:
Matthew B. Hart, Vasanthi Sivaprakasam
Publikováno v:
ACS Omega
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
ACS Omega, Vol 6, Iss 15, Pp 10150-10159 (2021)
Surface-enhanced Raman spectroscopy (SERS) is conducted from single aerosol particles held in a linear electrodynamic quadrupole trap. SERS measurements from two representative types of ambient aerosol particles, semi-liquid and solid aerosols, are d
Autor:
J. E. Tucker, Matthew B. Hart, Jay D. Eversole, Jana S. Kesavan, Cathy S. Scotto, D. Silcott, D. C. Mcpherson, Z. Minter, H.-B. Lin
Publikováno v:
Aerosol Science and Technology. 54:601-610
One issue that has persisted since the beginning of what might be referred to as a modern era of biological aerosol research (since the 1990’s), is absence of reference biological aerosols that wou...
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 208:188-195
We describe a system to characterize individual aerosol particles using stable and repeatable measurement of elastic light scattering. The method employs a linear electrodynamic quadrupole (LEQ) particle trap. Charged particles, continuously injected
Publikováno v:
The Journal of Physical Chemistry C. 121:22326-22334
We report the observation and measurement of surface enhanced Raman spectroscopy (SERS) signatures from individual suspended aerosol particles. To our knowledge, this is the first report of SERS from single suspended particles formed from droplets co
Publikováno v:
Optics in the Life Sciences Congress.
We describe a linear electrodynamic quadrupole trap to interrogate particles in a controlled environment. Single or multiple particles ranging in size from 0.5 um to above 100 um can be held indefinitely for study.
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 88:163-171
We use the discrete dipole approximation (DDA) to study the backscatter of agglomerate particles consisting of oblong monomers. We examine the effects of monomer number and packing structure on the resulting negative polarization branch at small phas
Publikováno v:
Optics express. 22(16)
Fluorescence spectra from individual aerosol particles that were either coated or embedded with metallic nanoparticles (MNPs) was acquired on-the-fly using 266 nm and 355 nm excitation. Using aqueous suspensions of MNPs with either polystyrene latex
Publikováno v:
Optics Communications. 125:275-287
The fields from a system composed of two conducting, osculating spheres are derived using an extension of Mie theory. The boundary conditions are satisfied on both surfaces by expanding the fields in terms of vector spherical harmonics and translatin