Light-guide plates (LGPs) with aperiodic or size-varied microstructures are widely used in edge-lit light-source backlight systems for their high uniformity. In this Letter we designed a LGP with periodic and single-sized microstructures and analyzed the relationship between the holistic arrangement density of the microstructures and the uniformity. By controlling the holistic arrangement densi...

A computational approach to the optimization of fracture resistance of multiphase materials (here high speed steels) by varying their microstructure is presented. The main points of the optimization of steels are as folIows: (1) development and verification of the model: numerical simulation of crack initiation and growth in real microstructures of steels, (2) computational experiment: simulati...

Improvement of light extraction efficiency of InGaN light emitting diodes (LEDs) using polydimethylsiloxane (PDMS) concave microstructures arrays was demonstrated. The size effect of the concave microstructures on the light extraction efficiency of III-Nitride LEDs was studied. Depending on the size of the concave microstructures, ray tracing simulations show that the use of PDMS concave micros...

the study of nucleation mechanism of new grains during severe plastic deformation of magnesium alloys is of great importance to control the characteristics of final microstructures.  to investigate the role of discontinuous recrystallization, a wrought az31 magnesium alloy was deformed by accumulative back extrusion process at 330 °c.  the obtained microstructures were studied using optical and...

BACKGROUND Polymers have been considered as important materials in fabrication of microstructures for various medical purposes including drug delivery. This study evaluates polyurethane as material for hollow microstructures preparation. RESULTS Polyurethane microstructures were obtained by interfacial polyaddition combined with spontaneous emulsification and present slightly acid pH values. ...

Junran Zhang, Xuefeng Wang, Zhongxia Wei, Zhenyao Wu, Meng Tang, Wei Niu, Ming Gao, Zhanpeng Lv, Wenqing Liu, Fengqi Song, Jun Du, Liang He, Rong Zhang, and Yongbing Xu National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China National Laboratory of Soli...

Ž This paper describes fabrication techniques for the fabrication of glassy carbon microstructures. Molding of a resin of poly furfuryl . alcohol using elastomeric molds yields polymeric microstructures, which are converted to free-standing glassy carbon microstructures by Ž . Ž 2. heating T ;500–11008C under argon. This approach allows the preparation of macroscopic structures several mm with ...

We have investigated magnetic actuation of hinged, surface micromachined structures. Electroplated magnetic material (Permalloy) is integrated with two types of hinged microstructures and the magnetic actuation process has been experimentally characterized. Under a given external magnetic field, the angular displacement of a hinged structure is determined by the volume of the magnetic material ...