New technology shields wind turbines from positive polarity lightning strikes

Positive charges distributed in the air are concentrated near the conventional air-termination, so positive polarity lightning of the same polarity avoids the positive charges and possibly strike the side of…

Challenging the traditional approach to human-robot interaction

Taylor Higgins, assistant professor of mechanical engineering at the FAMU-FSU College of Engineering, leads several projects exploring human-robot interaction, including an unusual study of motor learning through unicycle riding. Credit:…

Turning 3D printing’s biggest flaw into its smartest feature

Credit: Johns Hopkins University Civil and systems engineers at Johns Hopkins University have turned a longstanding problem with 3D printers into a multifunctional feature: The team developed a new printing…

Enhancing mechanical and thermoelectric performance of alloy for chip-scale refrigeration

Magnetically controlled kirigami surfaces move objects: No grasping needed

Researchers have developed a novel device that couples magnetic fields and kirigami design principles to remotely control the movement of a flexible dimpled surface, allowing it to manipulate objects without…

Improved magnetocaloric heat pump paves the way for more sustainable cooling and heating technology

Credit: Pixabay/CC0 Public Domain A team of researchers from the U.S. Department of Energy Ames National Laboratory developed a magnetocaloric heat pump that matches current vapor-compression heat pumps for weight,…

Compendium of geothermal bit behavior may help drive down drilling time

Sandia National Laboratories mechanical engineers David Raymond, left, and Melanie Schneider pose in Sandia’s Hard Rock Drilling Facility with a polycrystalline diamond compact bit. They recently completed an analysis on…

Engineers reveal concept for detonative propulsion

Conceptual scheme of a supersonic vehicle using the ram-rotor detonation engine. Credit: Chinese Journal of Aeronautics Detonation is a supersonic combustion wave, characterized by a shock wave driven by the…

3D printing approach for shape-changing materials means better biomedical, energy, robotics devices

Smallest walking robot makes microscale measurements