A Study of Latex Film Formation by Atomic Force Microscopy. 1. A Comparison of Wet and Dry Conditions

Langmuir ◽  
1995 ◽  
Vol 11 (7) ◽  
pp. 2726-2733 ◽  
Author(s):  
F. Lin ◽  
D. J. Meier
Keyword(s):  
Atomic Force Microscopy ◽  
Film Formation ◽  
Latex Film ◽  
Force Microscopy ◽  
Atomic Force ◽  
Dry Conditions ◽  
Latex Film Formation

Atomic force microscopy study of latex film formation

Langmuir ◽  
1992 ◽  
Vol 8 (3) ◽  
pp. 760-762 ◽  
Author(s):  
Yongcai Wang ◽  
Didier Juhue ◽  
Mitchell A. Winnik ◽  
On Man Leung ◽  
M. Cynthia Goh
Keyword(s):  
Atomic Force Microscopy ◽  
Film Formation ◽  
Microscopy Study ◽  
Latex Film ◽  
Atomic Force Microscopy Study ◽  
Force Microscopy ◽  
Atomic Force ◽  
Latex Film Formation

scholarly journals A method for the direct measurement of surface tension of collected atmospherically relevant aerosol particles using atomic force microscopy

2016 ◽  
Vol 16 (15) ◽  
pp. 9761-9769 ◽  
Author(s):  
Andrew D. Hritz ◽  
Timothy M. Raymond ◽  
Dabrina D. Dutcher
Keyword(s):  
Surface Tension ◽  
Atomic Force Microscopy ◽  
Atmospheric Aerosol ◽  
Aerosol Particles ◽  
Particle Surface ◽  
Ex Situ ◽  
Force Microscopy ◽  
Atomic Force ◽  
Direct Measurements ◽  
Dry Conditions

Abstract. Accurate estimates of particle surface tension are required for models concerning atmospheric aerosol nucleation and activation. However, it is difficult to collect the volumes of atmospheric aerosol required by typical instruments that measure surface tension, such as goniometers or Wilhelmy plates. In this work, a method that measures, ex situ, the surface tension of collected liquid nanoparticles using atomic force microscopy is presented. A film of particles is collected via impaction and is probed using nanoneedle tips with the atomic force microscope. This micro-Wilhelmy method allows for direct measurements of the surface tension of small amounts of sample. This method was verified using liquids, whose surface tensions were known. Particles of ozone oxidized α-pinene, a well-characterized system, were then produced, collected, and analyzed using this method to demonstrate its applicability for liquid aerosol samples. It was determined that oxidized α-pinene particles formed in dry conditions have a surface tension similar to that of pure α-pinene, and oxidized α-pinene particles formed in more humid conditions have a surface tension that is significantly higher.

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