Category Physics

MIT researchers have developed a new design system that catalogues the physical properties of a huge number of tiny cube clusters. These clusters can then serve as building blocks for larger printable objects. Credit: Computational Fabrication Group at MIT

Designing the microstructure of printed objects. Today’s 3D printers have a resolution of 600 dots per inch, ie they could pack a billion tiny cubes of different materials into a volume that measures just 1.67 cubic inches. Such precise control of printed objects’ microstructure gives designers commensurate control of the objects’ physical properties – eg. density or strength, or the way they deform when subjected to stresses...

Researchers Bjorn Scholz (left) and Grayson Rich (right) with the world’s smallest neutrino detector as it’s being installed along ‘neutrino alley’ at the Spallation Neutron Source at Oak Ridge National Laboratory in Tennessee. Credit: Juan Collar/University of Chicago

Physicists play leading role in confirming theory predicted 4 decades ago. In 1974, a Fermilab physicist predicted a new way for ghostly particles called neutrinos to interact with matter. More than four decades later, a UChicago-led team of physicists built the world’s smallest neutrino detector to observe the elusive interaction for the first time. Neutrinos are a challenge to study because their interactions with matter are so rare...

A sample of heat – conducting polymer is tested for thickness in U-M’s Lurie Nanofabrication Facility. Image credit: Joseph Xu, Michigan Engineering

Advanced plastics could usher in lighter, cheaper, more energy-efficient product components, including those used in vehicles, LEDs and computers – if only they were better at dissipating heat. A new technique that can change plastic’s molecular structure to help it cast off heat is a promising step in that direction. Developed by a team of University of Michigan researchers in materials science and mechanical engineering and detailed in a new study published in Science Advances, the process is inexpensive and scalable.

The concept can likely be adapted to a variety of other plastics...