Inside this issue
Features
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Application Briefs
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Articles
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5 Ws
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NASA Spinoff
Tech Briefs
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Test & Measurement
22 Extreme Low-Frequency Hydrophone
22 Chip Delivers COVID-19 Test Results on a Smartphone
24 Cord Tension Measurement Device
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Manufacturing & Prototyping
44 Catalyst Makes Styrene Manufacturing Cheaper and Greener
44 3D Printing of Gels and Soft Materials
45 Rapid 3D Printing of Biomedical Parts
47 Tiny 3D-Printed Bricks Enable Bone and Soft Tissue Repair
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Materials
40 Smart Aerogel Turns Air into Drinking Water
40 Wafer-Thin Nanopaper Changes from Firm to Soft at the Touch of a Button
41 Pollen-Based Paper Bends and Curls in Response to Humidity
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Sensors/Data Acquisition
27 Biometric Security System Based on the Human Heartbeat
27 Paper-Based Sensor Detects COVID-19 in Minutes
28 Ultra-Sensitive Flow Microsensors
29 RFID-Based Rotary Position Sensor
30 Carbon-Based Air Quality Sensor
30 Passive Polarized Fiber Optic Sensing
31 Accelerometer and Gyroscope Designs Based on Carbon Nanotube Tape
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Aerospace
32 Hinge Design Helps Quadrotors Climb
32 System Helps Drones Detect and Avoid Power Lines
34 Predicting In-Flight Air Density for More Accurate Landing
34 Navigation Algorithm Enables Drones to Learn Acrobatic Maneuvers
35 Turbulence Model for Design of Aircraft Capable of Handling Extreme Scenarios
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Propulsion
36 High-Power Microwaves for Launching Space-Bound Rockets
36 Hybrid-Electric Plane Concept Could Reduce Air Pollution
37 Hybrid Propellant Formulation Uses Graphene Foams
38 Rotating Detonation Engines for Rocket Propulsion
38 Rocket Thruster Exploits the Mechanism Behind Solar Flares
Products
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Briefs
24 Novel Flexible Terahertz Camera Can Inspect Objects with Diverse Shapes
25 Imaging Space Debris in High Resolution
26 New Electron Microscopy Technique Offers First Look at Previously Hidden Processes
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Applications
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Articles
4 Harnessing SWIR Line Scan Imaging Technology
8 Preventing Heat-Induced Image Warping in Machine Vision Line Scan Cameras
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Technology Leaders
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Products
28 New Products
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Briefs
20 Cobalt-Free Cathodes for Lithium-Ion Batteries
20 Nanostructured Alloy for Battery Anodes
21 Enhancing Hybrid Flow Battery Electrodes with Nanomaterials
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Articles
4 Charge Control Methods for Supercapacitors
8 Accelerated Degradation of Li-Ion Batteries for High-Rate Discharge Applications
12 Low-Cost, Fast Production of Solid-State Batteries
14 Range-Doubling Lithium-Metal Batteries “Build Themselves” in Li-Ion Manufacturing Method
16 Powering Tomorrow: Battery and Electrification Summit Preview
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Applications