Tech Briefs Magazine - May 2021 - 4

May 2021 * Vol. 45 No. 5

Contents
Features

16

10

Products of Tomorrow

16

Cleaner, Faster Flight is on the Horizon

49

Application Briefs

52

Facility Focus

56

NASA Spinoff: In-Home Tankless Water Heaters

22

Tech Briefs
22

Test & Measurement

22

Extreme Low-Frequency Hydrophone

22

Chip Delivers COVID-19 Test Results on a Smartphone

24

Cord Tension Measurement Device

25

Disease-Sniffing Device Rivals a Dog's Nose

26

Device Measures Toxic Lead in Minutes

27

Sensors

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

32

Aeronautics

32

52

Departments
8

UpFront

12

5 Ws

Hinge Design Helps Quadrotors Climb

14

Q&A

32

System Helps Drones Detect and Avoid Power Lines

55

Advertisers Index

34

Navigation Algorithm Enables Drones to Learn Acrobatic
Maneuvers

34

Predicting In-Flight Air Density for More Accurate Landing

35

Turbulence Model for Design of Aircraft Capable of Handling
Extreme Scenarios

36

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

New for Design Engineers
50

New on the Market

(Propulsion continued on page 6)

4

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Tech Briefs, May 2021


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Tech Briefs Magazine - May 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - May 2021

Tech Briefs Magazine - May 2021 - Intro
Tech Briefs Magazine - May 2021 - Sponsor
Tech Briefs Magazine - May 2021 - Cov1
Tech Briefs Magazine - May 2021 - Cov2
Tech Briefs Magazine - May 2021 - 1
Tech Briefs Magazine - May 2021 - 2
Tech Briefs Magazine - May 2021 - 3
Tech Briefs Magazine - May 2021 - 4
Tech Briefs Magazine - May 2021 - 5
Tech Briefs Magazine - May 2021 - 6
Tech Briefs Magazine - May 2021 - 7
Tech Briefs Magazine - May 2021 - 8
Tech Briefs Magazine - May 2021 - 9
Tech Briefs Magazine - May 2021 - 10
Tech Briefs Magazine - May 2021 - 11
Tech Briefs Magazine - May 2021 - 12
Tech Briefs Magazine - May 2021 - 13
Tech Briefs Magazine - May 2021 - 14
Tech Briefs Magazine - May 2021 - 15
Tech Briefs Magazine - May 2021 - 16
Tech Briefs Magazine - May 2021 - 17
Tech Briefs Magazine - May 2021 - 18
Tech Briefs Magazine - May 2021 - 19
Tech Briefs Magazine - May 2021 - 20
Tech Briefs Magazine - May 2021 - 21
Tech Briefs Magazine - May 2021 - 22
Tech Briefs Magazine - May 2021 - 23
Tech Briefs Magazine - May 2021 - 24
Tech Briefs Magazine - May 2021 - 25
Tech Briefs Magazine - May 2021 - 26
Tech Briefs Magazine - May 2021 - 27
Tech Briefs Magazine - May 2021 - 28
Tech Briefs Magazine - May 2021 - 29
Tech Briefs Magazine - May 2021 - 30
Tech Briefs Magazine - May 2021 - 31
Tech Briefs Magazine - May 2021 - 32
Tech Briefs Magazine - May 2021 - 33
Tech Briefs Magazine - May 2021 - 34
Tech Briefs Magazine - May 2021 - 35
Tech Briefs Magazine - May 2021 - 36
Tech Briefs Magazine - May 2021 - 37
Tech Briefs Magazine - May 2021 - 38
Tech Briefs Magazine - May 2021 - 39
Tech Briefs Magazine - May 2021 - 40
Tech Briefs Magazine - May 2021 - 41
Tech Briefs Magazine - May 2021 - 42
Tech Briefs Magazine - May 2021 - 43
Tech Briefs Magazine - May 2021 - 44
Tech Briefs Magazine - May 2021 - 45
Tech Briefs Magazine - May 2021 - 46
Tech Briefs Magazine - May 2021 - 47
Tech Briefs Magazine - May 2021 - 48
Tech Briefs Magazine - May 2021 - 49
Tech Briefs Magazine - May 2021 - 50
Tech Briefs Magazine - May 2021 - 51
Tech Briefs Magazine - May 2021 - 52
Tech Briefs Magazine - May 2021 - 53
Tech Briefs Magazine - May 2021 - 54
Tech Briefs Magazine - May 2021 - 55
Tech Briefs Magazine - May 2021 - 56
Tech Briefs Magazine - May 2021 - Cov3
Tech Briefs Magazine - May 2021 - Cov4
Tech Briefs Magazine - May 2021 - PIT-Cov1
Tech Briefs Magazine - May 2021 - PIT-Cov2
Tech Briefs Magazine - May 2021 - PIT-1
Tech Briefs Magazine - May 2021 - PIT-2
Tech Briefs Magazine - May 2021 - PIT-3
Tech Briefs Magazine - May 2021 - PIT-4
Tech Briefs Magazine - May 2021 - PIT-5
Tech Briefs Magazine - May 2021 - PIT-6
Tech Briefs Magazine - May 2021 - PIT-7
Tech Briefs Magazine - May 2021 - PIT-8
Tech Briefs Magazine - May 2021 - PIT-9
Tech Briefs Magazine - May 2021 - PIT-10
Tech Briefs Magazine - May 2021 - PIT-11
Tech Briefs Magazine - May 2021 - PIT-12
Tech Briefs Magazine - May 2021 - PIT-13
Tech Briefs Magazine - May 2021 - PIT-14
Tech Briefs Magazine - May 2021 - PIT-15
Tech Briefs Magazine - May 2021 - PIT-16
Tech Briefs Magazine - May 2021 - PIT-17
Tech Briefs Magazine - May 2021 - PIT-18
Tech Briefs Magazine - May 2021 - PIT-19
Tech Briefs Magazine - May 2021 - PIT-20
Tech Briefs Magazine - May 2021 - PIT-21
Tech Briefs Magazine - May 2021 - PIT-22
Tech Briefs Magazine - May 2021 - PIT-23
Tech Briefs Magazine - May 2021 - PIT-24
Tech Briefs Magazine - May 2021 - PIT-25
Tech Briefs Magazine - May 2021 - PIT-26
Tech Briefs Magazine - May 2021 - PIT-27
Tech Briefs Magazine - May 2021 - PIT-28
Tech Briefs Magazine - May 2021 - PIT-Cov3
Tech Briefs Magazine - May 2021 - PIT-Cov4
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