MRS Bulletin Materials News Podcast

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Matt Dickerson of the Air Force Research Laboratory about his research group’s development of 3D print nanofibrous ceramics. By blending together block copolymers and pre-ceramic polymers, then burning away the block polymer, the pre-ceramic material transforms into ceramic. Dickerson believes this technique will make large-scale ceramic components easier to make. This work was published in a recent issue of npj Advanced Manufactu...

In this podcast episode, MRS Bulletin’s Laura Leay interviews Gideon Segev from Tel Aviv University in Israel and Lawrence Berkeley National Laboratory and Shane Ardo from the University of California, Irvine about their ratchet-based ion pumps (RBIPs). Consisting of a nanoporous capacitor-like structure, the RBIP drives a flux of charged particles at voltages as low as 50 mV, while redox reactions need at least 1.23 V. Furthermore, the ratchet is selective where ions can be sorted based on t...

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Samual Stupp from Northwestern University about his group’s research on developing treatments for spinal cord injuries by use of an organoid. The researchers fabricated the human spinal cord organoid by including microglial cells, which are the immune cells in the central nervous system. They mimicked various kinds of spinal injuries, then applied different injury treatments to see how the organoid responded best. This work was pu...

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Thomas White from the University of Nevada, Reno, about his research group’s work on superheating gold. By hitting the gold foil with 45 femtosecond blue laser pulses, the team heated the foil uniformly up to 14 times hotter than its melting point while maintaining the material’s crystal structure. To confirm the temperature, the group introduced a thermometry technique that derives the temperature based on the velocity of the ato...

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Victor Lopez-Richard from Federal University of São Carlos in Brazil about his memory device called a mem-emitter. Unlike a memresistor (short for “memory resistor”), which made of materials whose electrical resistance can be tuned, the mem-emitter is used to tune optical properties. Experimentally, Lopez-Richard’s research group made the device out of molybdenum diselenide, which is a transition metal dichalcogenide, that was the...

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Daniel Garcia-Gonzalez from Universidad Carlos III de Madrid in Spain about his research group’s reprogrammable metamaterial. The researchers use a soft polymer, mixed with magnetic particles. By rotating the orientation of the magnets, they tune the softness or compressibility of the material. This work was published in a recent issue of Advanced Materials.

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Sheng Xu from Tohoku University, Japan about his lightweight shape memory alloy that retains superelasticity at temperatures as cold as 4 K and as hot as 400°C. This range is about 5 times wider than commercial shape memory alloys. Shape memory alloys are needed for extreme environments such as part of machines in space or deep sea. Xu also sees uses for biomedical applications or for storage containers for liquid fuels like liqui...

In this podcast episode, MRS Bulletin’s Sophia Chen interviews Lane Martin from Rice University about characterization of relaxor ferroelectrics, materials with noteworthy energy-conversion properties used in sensors and actuators. Martin’s research team investigated the material’s behavior at the nanoscale. The researchers found that the specific thin film they studied—the alloy lead magnesium niobate lead titanate—exhibited excellent properties down to 25–30 nm thick before they would start...