The group of physicists, electrical engineers, materials scientists, chemists and biologists from five universities will explore methods to produce new synthetic materials that can refract, or bend, light waves "backwards." The U-M team, led by physics professor Roberto Merlin, includes: Stephen For...
A Future in Materials That Bend Waves of EnergyScientists have learned how to construct so-called metamaterialsthat bend waves of light, sound...Markoff, John
Plastic deformation is the ability of a material to bend or deform 变形 before breaking. As engineers, we usually design materials so that they don’t deform under normal conditions. You don’t want your car to lean 倾向 to the east after a strong west wind. However sometimes we can take...
lasers, are directed at an acute angle onto a surface to be shaped and that the distance covered from the starting position to the end position in the shaping operations is measured by means of a photodetector, e.g., a diode camera, which is set up perpendicular to the light spot or ...
The ensemble is composed of a responsive hydrogel, liquid crystal elastomer or semicrystalline polymer ribbons that reversibly bend or twist. The dispersions of these ribbons mechanically interlock, inducing reversible aggregation. The aggregated liquid crystal elastomer ribbons have a 12-fold increase in ...
The ribbon structure provides the required momentum that allows light to couple with the plasmons41, revealed as a resonant absorption peak in its extinction spectra. The resonance along the a direction is much stronger than that along b, and both occur at different resonant frequencies, indicating...
Thus, when the composites were submitted to bending stress, even though the presence of the compatibilizer LHPB led to stronger adhesion at the interface, its rubber behavior resulted in a material that required lower flexural force to bend by 5% deformation when compared to the composites in...
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This hydrogel is flexible and can bend toward either anode or cathode, depending on the pH of the solution (Sperling 1994). CB composite hydrogels can be fabricated by interpenetrating polymer networks (IPNs). It is the combination of two or more polymers in the network that are synthesized ...
Soft, wireless physiological sensors that gently adhere to the skin are capable of continuous clinical-grade health monitoring in hospital and/or home settings, of particular value to critically ill infants and other vulnerable patients, but they present risks for injury upon thermal failure. This pa...