Zobrazeno 1 - 10
of 19
pro vyhledávání: '"L. W. Farrar"'
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 055209-055209-5 (2017)
Single airborne aerosol particle of isovanillin were detected using a compact Raman spectroscopy system. The Raman system consisted of a 10 W, 532-nm cw laser, a 50x aerosol concentrator, an aerosol flow cell, an f/1.0 single-sided collection optics,
Externí odkaz:
https://doaj.org/article/51d64e5a05ca4b77bcc1d896d4fdc74b
Publikováno v:
AIP Advances, Vol 6, Iss 2, Pp 025310-025310-6 (2016)
Raman spectra of ammonia (NH3), chlorine (Cl2), hydrogen sulfide (H2S), phosgene (COCl2), and sulfur dioxide (SO2) toxic gases have been measured in the fingerprint region 400-1400 cm−1. A relatively compact (
Externí odkaz:
https://doaj.org/article/8c67cac007d44ce8ac4f2a54028d2e63
Publikováno v:
Aerosol Science and Technology. 49:753-756
A compact Raman spectroscopy system with high sensitivity to chemical aerosols has been developed. This system has been used to detect isovanillin aerosols with mass concentration of 12 pg/cm3 in a 15 s signal integration period with a signal-to-nois
Autor:
G. K. Kilper, B. G. Perkins, L. W. Farrar, D. W. Sickenberger, F. M. D’Amico, S. Di Cecca, M. L. Clark, Steven D. Christesen, Erik D. Emmons, Thomas H. Jeys, Roshan L. Aggarwal, Richard J. Kreis, M. Amin
Publikováno v:
The Review of scientific instruments. 88(3)
A sensitive chemical aerosol Raman detector (CARD) has been developed for the trace detection and identification of chemical particles in the ambient atmosphere. CARD includes an improved aerosol concentrator with a concentration factor of about 40 a
Autor:
Roshan L. Aggarwal, Richard P. Van Duyne, Nathan G. Greeneltch, L. W. Farrar, Dennis L. Polla
Publikováno v:
Applied Spectroscopy. 67:132-135
The surface-enhanced coherent anti-Stokes Raman scattering (SECARS) from a self-assembled monolayer (SAM) of benzenethiol on a silver-coated surface-enhanced Raman scattering (SERS) substrate has been measured for the 1574 cm-1 SERS mode. A value of
Publikováno v:
The Journal of Physical Chemistry C. 116:16656-16659
The surface-enhanced Raman scattering (SERS) signal from an AgFON plasmonic substrate, recoated with benzenethiol, was observed to increase by about 100% upon heating for 3.5 min at 100C and 1.5 min at 125C. The signal intensity was found to increase
Autor:
Nathan G. Greeneltch, Roshan L. Aggarwal, Richard P. Van Duyne, Dennis L. Polla, L. W. Farrar
Publikováno v:
Applied Spectroscopy. 66:740-743
Raman line widths of neat benzenethiol and a self-assembled monolayer (SAM) of benzenethiol on a surface-enhanced Raman scattering (SERS) substrate have been measured using a mini spectrometer with a resolution (full width at half-maximum) of 3.3 ±
Autor:
Roshan L. Aggarwal, Dennis L. Polla, Xavier Andrade, Semion K. Saikin, L. W. Farrar, Alán Aspuru-Guzik
Publikováno v:
Solid State Communications. 152:204-209
a b s t r a c t The absolute Raman cross section σRS of the first-order 1332-cm − 1 optical phonons in type Ia natural diamond was measured using 785- and 1064-nm pump lasers for the excitation of Raman scattering. A small temperature-controlled b
Publikováno v:
Journal of Raman Spectroscopy. 43:911-916
The components of the third-order nonlinear optical susceptibility χ(3) for the 1002-cm–1 mode of neat benzenethiol have been measured using coherent anti-Stokes Raman scattering with continuous-wave diode pump and Stokes lasers at 785.0 and 852.0
Publikováno v:
Solid State Communications. 151:1367-1370
a b s t r a c t Coherent anti-Stokes Raman scattering (CARS) and normal anti-Stokes Raman scattering (NARS) have been measured in (001) GaP at room temperature due to the 403 cm − 1 LO phonons using a continuous wave (CW) 785.0 nm fixed-wavelength