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2 results on '"Sijie Ran"'

1. Implementation of the Qt4 test bench based on Arm9.

Author

Feng Ran, Tao Wang, and Sijie Ran

Abstract

This paper presents an implementation of the Qt4 test bench based on ARM9. With Linux as the operating system, based on ARM9 system board, Qt4 test bench is implemented and completes the corresponding tests. The process of the implementation combining the build of compiler environments, the kernel transplant, the production of the root filesystem, drivers installation, and the process of Qt/Embedded transplant supporting touch screen, is detailed explained. At last, the console, based on Qt/Embedded for GUI support system, is presented to control four applications, each of which has tested individual objective functions related to USB camera and LCD display. [ABSTRACT FROM PUBLISHER]

Published
2012
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2. Magnetically actuated and controlled colloidal sphere-pair swimmer.

Author

Sijie Ran, Allon Guez, and Gary Friedman

Subjects
MICROSCOPICAL technique, BIOMEDICAL materials, MAGNETIC fields, SWITCHING theory, COLLOIDAL networks, EQUIPMENT & supplies
Abstract

Magnetically actuated swimming of microscopic objects has been attracting attention partly due to its promising applications in the bio-medical field and partly due to interesting physics of swimming in general. While colloidal particles that are free to move in fluid can be an attractive swimming system due it its simplicity and ability to assemble in situ, stability of their dynamics and the possibility of stable swimming behavior in periodically varying magnetic fields has not been considered. Dynamic behavior of two magnetically interacting colloidal particles subjected to rotating magnetic field of switching frequency is analyzed here and is shown to result in stable swimming without any stabilizing feedback. A new mechanism of swimming that relies only on rotations of the particles themselves and of the particle pair axis is found to dominate the swimming dynamics of the colloidal particle pair. Simulation results and analytical arguments demonstrate that this swimming strategy compares favorably to dragging the particles with an external magnetic force when colloidal particle sizes are reduced. [ABSTRACT FROM AUTHOR]

Published
2016
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