Optical trapping of gold aerosols

Regina K. Schmitt; Liselotte Jauffred Pedersen; S. M. Taheri; Heiner Linke; Lene Broeng Oddershede

doi:10.1117/12.2188444

Optical trapping of gold aerosols

Regina K. Schmitt, Liselotte Jauffred Pedersen, S. M. Taheri, Heiner Linke, Lene Broeng Oddershede^*

^*Corresponding author for this work

Biocomplexity

Abstract

Aerosol trapping has proven challenging and was only recently demonstrated.1 This was accomplished by utilizing an air chamber designed to have a minimum of turbulence and a laser beam with a minimum of aberration. Individual gold nano-particles with diameters between 80 nm and 200 nm were trapped in air using a 1064 nm laser. The positions visited by the trapped gold nano-particle were quantified using a quadrant photo diode placed in the back focal plane. The time traces were analyzed and the trapping stiffness characterizing gold aerosol trapping determined and compared to aerosol trapping of nanometer sized silica and polystyrene particles. Based on our analysis, we concluded that gold nano-particles trap more strongly in air than similarly sized polystyrene and silica particles. We found that, in a certain power range, the trapping strength of polystyrene particles is linearly decreasing with increasing laser power.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9548
Publisher	SPIE - International Society for Optical Engineering
Publication date	25 Aug 2015
Article number	95480F-1
ISBN (Print)	9781628417142, 9781628417142
DOIs	https://doi.org/10.1117/12.2188444
Publication status	Published - 25 Aug 2015
Event	Optical Trapping and Optical Micromanipulation XII - San Diego, United States Duration: 9 Aug 2015 → 12 Aug 2015

Conference

Conference	Optical Trapping and Optical Micromanipulation XII
Country/Territory	United States
City	San Diego
Period	09/08/2015 → 12/08/2015

Keywords

Aerosol
aerotaxy
air
gold nano-particles
laser manipulation
optical tweezers
polystyrene nano-particles
power spectral analysis

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10.1117/12.2188444

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Optical trapping of gold aerosols. / Schmitt, Regina K.; Pedersen, Liselotte Jauffred; Taheri, S. M. et al.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9548 SPIE - International Society for Optical Engineering, 2015. 95480F-1.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Schmitt, RK, Pedersen, LJ, Taheri, SM, Linke, H & Oddershede, LB 2015, Optical trapping of gold aerosols. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9548, 95480F-1, SPIE - International Society for Optical Engineering, Optical Trapping and Optical Micromanipulation XII, San Diego, United States, 09/08/2015. https://doi.org/10.1117/12.2188444

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title = "Optical trapping of gold aerosols",

abstract = "Aerosol trapping has proven challenging and was only recently demonstrated.1 This was accomplished by utilizing an air chamber designed to have a minimum of turbulence and a laser beam with a minimum of aberration. Individual gold nano-particles with diameters between 80 nm and 200 nm were trapped in air using a 1064 nm laser. The positions visited by the trapped gold nano-particle were quantified using a quadrant photo diode placed in the back focal plane. The time traces were analyzed and the trapping stiffness characterizing gold aerosol trapping determined and compared to aerosol trapping of nanometer sized silica and polystyrene particles. Based on our analysis, we concluded that gold nano-particles trap more strongly in air than similarly sized polystyrene and silica particles. We found that, in a certain power range, the trapping strength of polystyrene particles is linearly decreasing with increasing laser power.",

keywords = "Aerosol, aerotaxy, air, gold nano-particles, laser manipulation, optical tweezers, polystyrene nano-particles, power spectral analysis",

author = "Schmitt, {Regina K.} and Pedersen, {Liselotte Jauffred} and Taheri, {S. M.} and Heiner Linke and Oddershede, {Lene Broeng}",

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TY - GEN

T1 - Optical trapping of gold aerosols

AU - Schmitt, Regina K.

AU - Pedersen, Liselotte Jauffred

AU - Taheri, S. M.

AU - Linke, Heiner

AU - Oddershede, Lene Broeng

PY - 2015/8/25

Y1 - 2015/8/25

N2 - Aerosol trapping has proven challenging and was only recently demonstrated.1 This was accomplished by utilizing an air chamber designed to have a minimum of turbulence and a laser beam with a minimum of aberration. Individual gold nano-particles with diameters between 80 nm and 200 nm were trapped in air using a 1064 nm laser. The positions visited by the trapped gold nano-particle were quantified using a quadrant photo diode placed in the back focal plane. The time traces were analyzed and the trapping stiffness characterizing gold aerosol trapping determined and compared to aerosol trapping of nanometer sized silica and polystyrene particles. Based on our analysis, we concluded that gold nano-particles trap more strongly in air than similarly sized polystyrene and silica particles. We found that, in a certain power range, the trapping strength of polystyrene particles is linearly decreasing with increasing laser power.

AB - Aerosol trapping has proven challenging and was only recently demonstrated.1 This was accomplished by utilizing an air chamber designed to have a minimum of turbulence and a laser beam with a minimum of aberration. Individual gold nano-particles with diameters between 80 nm and 200 nm were trapped in air using a 1064 nm laser. The positions visited by the trapped gold nano-particle were quantified using a quadrant photo diode placed in the back focal plane. The time traces were analyzed and the trapping stiffness characterizing gold aerosol trapping determined and compared to aerosol trapping of nanometer sized silica and polystyrene particles. Based on our analysis, we concluded that gold nano-particles trap more strongly in air than similarly sized polystyrene and silica particles. We found that, in a certain power range, the trapping strength of polystyrene particles is linearly decreasing with increasing laser power.

KW - Aerosol

KW - aerotaxy

KW - air

KW - gold nano-particles

KW - laser manipulation

KW - optical tweezers

KW - polystyrene nano-particles

KW - power spectral analysis

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M3 - Article in proceedings

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SN - 9781628417142

VL - 9548

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE - International Society for Optical Engineering

T2 - Optical Trapping and Optical Micromanipulation XII

Y2 - 9 August 2015 through 12 August 2015

ER -

Optical trapping of gold aerosols

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