Curvature from planar polymer sheets in response to light
Researchers at NC State have developed a way to create curvature from 2D sheets using only light.
The advance builds on earlier work by the same research team, which focused on self-folding 3-D structures. The key advance here is that rather than having the plastic fold along sharp lines – into shapes such as cubes or pyramids – the plastics bend and curve. The final shape is dictated by where ink is patterned on the sheet. Computer models (not shown in the video) can predict the final shape.
The polymer sheets in this video are pre-strained and exposed to light. The ink on the polymer sheets absorbs the light, the polymer gets hot and shrinks, which causes it to distort only in the inked regions. In the case of "indirect curvature", the interplay between the hot (soft) and cool (stiff) regions impacts the final shape.
Researchers from North Carolina State University have developed a new technique that takes advantage of gold nanoparticles to trigger the sequential unfolding of three-dimensional structures using different wavelengths of light.
Specifically, the technique makes use of the fact that differe ... more
Researchers from North Carolina State University have created a new online service - ChemMaps - that allows users to interactively navigate the chemical space of over 8,000 drugs and 47,000 environmental compounds in 3D and real time. ChemMaps is designed to be a central resource for studen ... more
Engineering and physics researchers at North Carolina State University have developed a new technology for steering light that allows for more light input and greater efficiency - a development that holds promise for creating more immersive augmented-reality display systems.
At issue are di ... more