Within a period of a few decades, the ¯eld of materials science and engineering
has emerged as a focal point for developments in virtually all areas
of engineering and applied science. The study of thin film materials has
been one of the unifying themes in the development of the ¯eld during this
period. As understood here, the area encompasses ¯lms bonded to relatively
thick substrates, multilayer materials, patterned ¯lms on substrates
and free-standing ¯lms.
Making microsystems at a scale level of few microns is called micromachining.
Micromachining is used to fabricate three-dimensional microstructures. It is the
foundation of a technology called Micro-Electro-Mechanical-Systems (MEMS). MEMS
usually consist of three major parts: sensors, actuators, and an associate electronic
circuitry that acts as the brain and controller of the whole system.
Purpose: Soft tissue defects can result in exposition of tendons, bones, joints and nerves… which must be covered early by flaps. Groin free flaps can afford the soft tissue defects.
Materials and methods:
Groin free flaps were used for 5 cases to cover soft tissue defects at hand, leg, ankle and foot. Those were followed up.
Results: 2 soft tissue defects of foot, others 2 of leg and ankle, 1 of hand. All cases were covered by groin free flaps which have good results.
The advances of microelectromechanical systems (MEMS) and devices have been instrumental in the demonstration of new devices and applications, and even in the creation of new fields of research and development: bioMEMS, actuators, microfluidic devices, RF and optical MEMS. Experience indicates a need for MEMS book covering these materials as well as the most important process steps in bulk micro-machining and modeling. We are very pleased to present this book that contains 18 chapters, written by the experts in the field of MEMS. ...
Society is approaching and advancing nano- and microtechnology from various angles of science and engineering. The need for further fundamental, applied, and experimental research is matched by the demand for quality references that capture the multidisciplinary and multifaceted nature of the science.
The confluence of market demand for greatly improved
compact power sources for portable electronics with the rapidly
expanding capability of micromachining technology has made
feasible the development of gas turbines in the millimeter-size
range. With airfoil spans measured in 100’s of microns rather
than meters, these “microengines” have about 1 millionth the
air flow of large gas turbines and thus should produce about 1
millionth the power, 10-100 W.
This book is to examine the most important algorithms in today's computer use and to teach the basic techniques with the increasing number of people who are interested in becoming serious computer users. It is ap-propriate use as a textbook for a course in the second, third or fourth in computer science: after students have some programming skills and familiarity with the system computer, but before they have advanced specialized courses in computer science field or other computer applications.