Editing Pyroelectricity (section)

=== Heat sensors ===
Very small changes in temperature can produce a pyroelectric potential. [[Passive infrared sensor]]s are often designed around pyroelectric materials, as the heat of a human or animal from several feet away is enough to generate a voltage.<ref>{{Cite journal |title=Target Classification Using Pyroelectric Infrared Sensors in Unattended Wild Ground Environment |journal=International Journal on Smart Sensing and Intelligent Systems |volume=6 |issue=5}}</ref>

* '''Thermal Sensors''': Infrared detectors, fire alarms, gas sensors, and motion sensors utilize high voltage/current responsivity. Lead-based materials (e.g., PMN-PT) excel here due to superior figures of merit (FoMs).<ref>{{Cite journal |last1=Ranu |last2=B |first2=Uthra |last3=Sinha |first3=Rahul |last4=Agarwal |first4=Pankaj B. |date=2022-03-15 |title=CMOS compatible pyroelectric materials for infrared detectors |url=https://linkinghub.elsevier.com/retrieve/pii/S1369800121007083 |journal=Materials Science in Semiconductor Processing |volume=140 |pages=106375 |doi=10.1016/j.mssp.2021.106375 |issn=1369-8001|url-access=subscription }}</ref><ref name=":0">{{Cite journal |last1=Thakre |first1=Atul |last2=Kumar |first2=Ajeet |last3=Song |first3=Hyun-Cheol |last4=Jeong |first4=Dae-Yong |last5=Ryu |first5=Jungho |date=2019-05-10 |title=Pyroelectric Energy Conversion and Its Applications—Flexible Energy Harvesters and Sensors |journal=Sensors |language=en |volume=19 |issue=9 |pages=2170 |doi=10.3390/s19092170 |doi-access=free |issn=1424-8220 |pmc=6539396 |pmid=31083331|bibcode=2019Senso..19.2170T }}</ref>
* '''Environmental Monitoring''': Detecting temperature changes in chemical processes or respiratory systems (e.g., self-powered breathing sensors).<ref name=":0" />