A large-area single-filament infrared emitter and its application in a spectroscopic ethanol gas sensing system  

作　　者：Stephan Schrder Floria Ottonello Briano Henrik FfodjegSrd Maksym Bryzgalov Jonas Orelund Kristinn B.Gylfason Goran Stemme Frank Niklaus 

机构地区：[1]KTH Royal Institute of Technology,Micro and Nanosystems,Malvinas vag 10,Stockholm,Sweden [2]SenseAir AB,Stationsgatan 12,Delsbo,Sweden

出　　处：《Microsystems & Nanoengineering》2021年第5期19-29,共11页微系统与纳米工程（英文）

基　　金：the European Commission through the ERC Starting Grant(M&M's,277879);the Swedish Research Council(621-2011-4437);Vinnova(2015-00402)is gratefully acknowledged。

摘　　要：Nondispersive infrared(NDIR)spectroscopy is an important technology for highly accurate and maintenance-free sensing of gases,such as ethanol and carbon dioxide.However,NDIR spectroscopy systems are currently too expensive,e.g.,for consumer and automotive applications,as the infrared(IR)emitter is a critical but costly component of these systems.Here,we report on a low-cost large-area IR emitter featuring a broadband emission spectrum suitable for small NDIR gas spectroscopy systems.The infrared emitter utilizes Joule heating of a Kanthal(FeCrAI)filament that is integrated in the base substrate using an automated high-speed wire bonding process,enabling simple and rapid formation of a long meander-shaped filament.We describe the critical infrared emitter characteristics,including the effective infrared emission spectrum,thermal frequency response,and power consumption.Finally,we integrate the emitter into a handheld breath alcohol analyzer and show its operation in both laboratory and real-world settings,thereby demonstrating the potential of the emitter for future low-cost optical gas sensor applications.

关 键 词：EMITTER utilize thereby 

分 类 号：TN21[电子电信—物理电子学]