Micro-scale and meso-scale architectural cues cooperate and compete to direct aligned tissue formation

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Micro and Meso Scale Robotic Assembly

Some of the challenges associated with micro systems assembly are examined in this paper, and illustrated with examples of on-going research at the authors’ institution. One of the basic challenges in precision assembly is the need for very high accuracy over a large range of motion. We address this challenge through a “multiscale” approach. This involves the design of assembly tools and proces...

Fabrication of beam structures with micro-scale cross-sections and meso-scale spans

To allow testing of micro-scale aerodynamics, a process was created to manufacture beam structures that combine spans of 1 cm with a cross-section of 5 μm by 100 μm. The structural considerations limiting the fabrication of a structure combining macro-scale spans with a micro-scale cross-section are analyzed. Limiting considerations include forces during operation, fluid forces during release, ...

Rac and Rho compete to cooperate

Micro-Mechanical Switch Array for Meso-Scale Actuation

Traditional MEMS actuators have limited stroke and force characteristics. This paper describes the development of a hybrid actuation solution, which utilizes a micro-machined actuator array to provide switching of mechanical motion of a larger mesoscale piezo-electric actuator. One motivating application of this technology is the development of a tactile display, where discrete mechanical actua...