TY - JOUR
T1 - Width dependence of platinum and titanium thermistor characteristics for application in room-temperature antenna-coupled terahertz microbolometer
AU - Banerjee, Amit
AU - Satoh, Hiroaki
AU - Tiwari, Ajay
AU - Apriono, Catur
AU - Rahardjo, Eko Tjipto
AU - Hiromoto, Norihisa
AU - Inokawa, Hiroshi
N1 - Publisher Copyright:
© 2017 The Japan Society of Applied Physics.
PY - 2017/4
Y1 - 2017/4
N2 - For application in a room-temperature microbolometer to detect terahertz waves, "narrow-width effects" on the temperature coefficient of resistance (TCR) and resistivity (ρ) for platinum (Pt) and titanium (Ti) nanowires are investigated. The TCR and ρ of a thermistor could be described by empirical formulas with average measured widths for higher precision. The effect of width on TCR in Pt is lower than that in Ti. The noise equivalent power of the microbolometer could be improved by a factor of 2.3 by replacing the Ti thermistor with a Pt thermistor of the same width (100nm). The results provide a detailed understanding of the narrow-width effect on TCR for Pt and Ti, which, to our knowledge, is lacking at present.
AB - For application in a room-temperature microbolometer to detect terahertz waves, "narrow-width effects" on the temperature coefficient of resistance (TCR) and resistivity (ρ) for platinum (Pt) and titanium (Ti) nanowires are investigated. The TCR and ρ of a thermistor could be described by empirical formulas with average measured widths for higher precision. The effect of width on TCR in Pt is lower than that in Ti. The noise equivalent power of the microbolometer could be improved by a factor of 2.3 by replacing the Ti thermistor with a Pt thermistor of the same width (100nm). The results provide a detailed understanding of the narrow-width effect on TCR for Pt and Ti, which, to our knowledge, is lacking at present.
UR - http://www.scopus.com/inward/record.url?scp=85017108997&partnerID=8YFLogxK
U2 - 10.7567/JJAP.56.04CC07
DO - 10.7567/JJAP.56.04CC07
M3 - Article
AN - SCOPUS:85017108997
SN - 0021-4922
VL - 56
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 4
M1 - 04CC07
ER -