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 for directly printing metal circuits, creating flexible, stretchable electronics. The technique can use multiple metals and substrates and is compatible with existing manufacturing systems that employ direct pri ... more
Researchers from North Carolina State University and MIT have found a simpler way to deposit magnetic iron oxide (magnetite) nanoparticles onto silica-coated gold nanorods, creating multifunctional nanoparticles with useful magnetic and optical properties.
Gold nanorods have widespread pote ... more
Researchers have developed a technique that allows users to collect 100 times more spectrographic information per day from microfluidic devices, as compared to the previous industry standard. The novel technology has already led to a new discovery: the speed of mixing ingredients for quantu ... more