Measurement of nanoparticle size, suspension polydispersity, and stability using near-field optical trapping and light scattering (Conference Presentation)

2017 ◽  
Author(s):  
Perry Schein ◽  
Dakota O'Dell ◽  
David Erickson
Keyword(s):  
Light Scattering ◽  
Optical Trapping ◽  
Near Field ◽  
Nanoparticle Size

Study of the mechanism of the light-scattering-mode superresolution near-field structure

2001 ◽  
Author(s):  
Wei Chih Lin ◽  
Jun D. Su ◽  
Ming C. Tsai ◽  
Din Ping Tsai ◽  
Nien H. Lu ◽  
...  
Keyword(s):  
Light Scattering ◽  
Near Field ◽  
Field Structure

scholarly journals Optical-Trapping Laser Techniques for Characterizing Airborne Aerosol Particles and Its Application in Chemical Aerosol Study

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 466
Author(s):  
Aimable Kalume ◽  
Chuji Wang ◽  
Yongle Pan
Keyword(s):  
Light Scattering ◽  
High Speed ◽  
Optical Trapping ◽  
Aerosol Particles ◽  
Particle Interaction ◽  
Raman Laser ◽  
General Description ◽  
Sample Collection ◽  
Laser Technologies ◽  
Laser Induced Breakdown

We present a broad assessment on the studies of optically-trapped single airborne aerosol particles, particularly chemical aerosol particles, using laser technologies. To date, extensive works have been conducted on ensembles of aerosols as well as on their analogous bulk samples, and a decent general description of airborne particles has been drawn and accepted. However, substantial discrepancies between observed and expected aerosols behavior have been reported. To fill this gap, single-particle investigation has proved to be a unique intersection leading to a clear representation of microproperties and size-dependent comportment affecting the overall aerosol behavior, under various environmental conditions. In order to achieve this objective, optical-trapping technologies allow holding and manipulating a single aerosol particle, while offering significant advantages such as contactless handling, free from sample collection and preparation, prevention of contamination, versatility to any type of aerosol, and flexibility to accommodation of various analytical systems. We review spectroscopic methods that are based on the light-particle interaction, including elastic light scattering, light absorption (cavity ring-down and photoacoustic spectroscopies), inelastic light scattering and emission (Raman, laser-induced breakdown, and laser-induced fluorescence spectroscopies), and digital holography. Laser technologies offer several benefits such as high speed, high selectivity, high accuracy, and the ability to perform in real-time, in situ. This review, in particular, discusses each method, highlights the advantages and limitations, early breakthroughs, and recent progresses that have contributed to a better understanding of single particles and particle ensembles in general.

Photocatalytic nano-optical trapping using TiO2 nanosphere pairs mediated with Mie-scattered near field

2013 ◽  
Vol 111 (1) ◽  
pp. 117-126
Author(s):  
Toshiyuki Honda ◽  
Mitsuhiro Terakawa ◽  
Minoru Obara
Keyword(s):  
Optical Trapping ◽  
Near Field

Mapping of localized spin-wave excitations by near-field Brillouin light scattering

2010 ◽  
Vol 97 (15) ◽  
pp. 152502 ◽  
Author(s):  
J. Jersch ◽  
V. E. Demidov ◽  
H. Fuchs ◽  
K. Rott ◽  
P. Krzysteczko ◽  
...  
Keyword(s):  
Light Scattering ◽  
Spin Wave ◽  
Near Field ◽  
Brillouin Light Scattering ◽  
Spin Wave Excitations
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