Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Modeling the Effect of the Relative Humidity on the Manipulation of Nanoparticles with an Atomic Force Microscope

Modeling the Effect of the Relative Humidity on the Manipulation of Nanoparticles with an Atomic... In the manipulation of nanoparticles, different behaviors are typically observed including sliding, rolling and rotation. Most of investigations in this field have so far focused on describing the interaction forces under vacuum (dry air) environmental condition, while the effect of the relative humidity has been poorly considered. In this work we developed a model for simulating the dynamic nanoparticle motion (rolling and sliding) in an AFM-based manipulation of nanoparticles in a humid environment. In our method, the interaction forces include the adhesion force, mainly consisting of the capillary force and van der Waals force, the normal force and friction forces. We calculated the adhesion force by considering the contributions from the wet and dry portions of the particle. Our stimulations show that nanoparticles smaller than the AFM tip tend to slide before rolling, while in large nanoparticles the rolling occurs first. The particle motion is achieved if the applied force exceeds a critical value and the direction of the rolling movement depends on the applied force angle. Furthermore, small nanoparticles are more easily manipulated by the tip in low-humidity conditions while the manipulations with large nanoparticles need high-humidity conditions. Preliminary results can be used to adjust proper handling force for the accurate and successful assembly of particles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Colloid Journal Springer Journals

Modeling the Effect of the Relative Humidity on the Manipulation of Nanoparticles with an Atomic Force Microscope

Yang, Li; Bai, Kezhao; Li, Yunqian
Colloid Journal , Volume 80 (3) – Jun 1, 2018
Download PDF
7 pages

Loading next page...
 
/lp/springer_journal/modeling-the-effect-of-the-relative-humidity-on-the-manipulation-of-7lbkyMZA0f
Publisher
Springer Journals
Copyright
Copyright © 2018 by Pleiades Publishing, Ltd.
Subject
Chemistry; Polymer Sciences; Surfaces and Interfaces, Thin Films
ISSN
1061-933X
eISSN
1608-3067
DOI
10.1134/S1061933X18030092
Publisher site
See Article on Publisher Site

Abstract

In the manipulation of nanoparticles, different behaviors are typically observed including sliding, rolling and rotation. Most of investigations in this field have so far focused on describing the interaction forces under vacuum (dry air) environmental condition, while the effect of the relative humidity has been poorly considered. In this work we developed a model for simulating the dynamic nanoparticle motion (rolling and sliding) in an AFM-based manipulation of nanoparticles in a humid environment. In our method, the interaction forces include the adhesion force, mainly consisting of the capillary force and van der Waals force, the normal force and friction forces. We calculated the adhesion force by considering the contributions from the wet and dry portions of the particle. Our stimulations show that nanoparticles smaller than the AFM tip tend to slide before rolling, while in large nanoparticles the rolling occurs first. The particle motion is achieved if the applied force exceeds a critical value and the direction of the rolling movement depends on the applied force angle. Furthermore, small nanoparticles are more easily manipulated by the tip in low-humidity conditions while the manipulations with large nanoparticles need high-humidity conditions. Preliminary results can be used to adjust proper handling force for the accurate and successful assembly of particles.

Journal

Colloid Journal – Springer Journals

Published: Jun 1, 2018

References

  • Abstracts of Papers
    Sitti, M.
  • Handbook of Micro/Nano Tribology
    Bhushan, B.
  • Abstracts of Papers, 6th IEEE Int. Symp. on Assembly and Task Planning: From Nano to Macro Assembly and Manufacturing
    Tafazzoli, A.; Pawashe, C.; Sitti, M.
  • Abstracts of Papers, ASME Int. Mechanical Engineering Congr. and Exposition
    Tafazzoli, A.; Sitti, M.
  • Abstracts of Papers, Int. Symp. on Micromechatronics and Human Science
    Zhou, Q.; Kallio, P.; Arai, F.; Fukuda, T.; Koivo, H.N.
  • Contact Mechanics and Friction: Physical Principles and Applications
    Popov, V.L.