nowadays, atomic force microscope is considered as a useful tool in the determination of intermolecular forces and surface topography with the resolution of nanometers. in this kind of microscope, micro cantilever is considered as the heart of the microscope and is used as a measuring tool.  this paper is aimed towards investigating the behavior of a piezoelectric micro cantilever with a triang...

The assembly of colloidal building-blocks is an efficient, inexpensive and flexible approach for the fabrication of a wide variety of photonic materials with designed shapes and large areas. In this review, the various assembly routes to the fabrication of colloidal crystals and their post-assembly modifications to the production of photonic materials are first described. Then, the emerging app...

This paper investigates one problem arising from ubiquitous sensing: can the position of a set of randomly placed sensors be automatically determined even if they do not have an overlapping field of view. (If the view overlapped, then standard stereo auto-calibration can be used.) This paper shows that the problem is solveable. Distant moving features allow accurate orientation registration. Gi...

Aggressive driving increases the risk of accidents, and it is normally a consequence of the impatience, frustration, or anger of drivers. In this paper, we present a case study showing the feasibility of using participatory sensing to enable drivers to report and gain awareness on aggressive driving behavior. We describe the design and development of the Driving Habits System prototype, a mobil...

Within the context of evolution, an altruistic act that benefits the receiving individual at the expense of the acting individual is a puzzling phenomenon. An extreme form of altruism can be found in colicinogenic E. coli. These suicidal altruists explode, releasing colicins that kill unrelated individuals, which are not colicin resistant. By committing suicide, the altruist makes it more likel...