March 2022 * Vol. 46 No. 3 Contents Features 10 Products of Tomorrow 16 Solving Enclosure Thermal Management Challenges 20 SAE WCX Preview: Staying Ahead of the Curve 52 Application Briefs 56 Facility Focus: University of Michigan College of Engineering 60 NASA Spinoff: LED Lighting Beyond Space Tech Briefs 22 Electrical/Electronics 22 12 Self-Sustaining, Intelligent Electronic Microsystems from " Green " Material 22 Sensitive Method for Detecting Transistor Defects 24 Turning Thermal Energy into Electricity 25 Charging Room System Provides Electricity Over the Air 26 Superlattice for Sustainable Quantum Electronics 27 Nanothin Piezoelectrics for Self-Powered Electronics 28 Test & Measurement 28 All-in-One Test for COVID-19 Monitoring 28 LEDs Can Detect Spoiled Food and Lethal Gases 30 Inexpensive Portable Detector Identifies Pathogens in Minutes 31 Measurement Method Tests Fit of Exoskeletons 32 Smartphone-Based COVID-19 Test 33 Materials & Coatings 33 Woven Nanotube Fibers Turn Heat into Power 33 Three-Layer Method Makes Plastic More Transparent and Adds Electrical Conductivity 34 Liquid Metal Coating Creates Effective Antiviral, Antimicrobial Fabric 35 Nanoprecipitates Toughen Structural Alloys 36 Fibers Turn Fabric into Breath-Regulating Garments 38 Propulsion 38 Power Processing Unit for Small Spacecraft Electric Propulsion 38 Process Converts Ethanol to Jet Fuel 39 Propulsion System for Hypersonic Flight 40 Simple, Fuel-Efficient Rocket Engine for Cheaper, Lighter Spacecraft 41 Ignition Technology for Electric Propulsion Devices (Tech Briefs continued on page 6) 4 www.techbriefs.com Tech Briefs, March 2022 10 46 Departments 8 Click 12 5 Ws 14 Q&A 59 Advertisers Index New for Design Engineers 54 New on the Market TB Contents 0322_1.indd 4 Cov ToC 2/17/22 2:37 PMhttp://www.techbriefs.com http://info.hotims.com/82319-780