Ultrathin gold island films for time-dependent temperature sensing

作者：Sun Hongtao; Yu Mingpeng; Sun Xiang; Wang Gongkai; Lian Jie^*

来源：Journal of Nanoparticle Research, 2014, 16(2): 2273.

DOI：10.1007/s11051-014-2273-x

• Ultrathin film
• Thermo-sensor
• Surface plasmon
• Dewetting
• Gold
• Time-dependent

We report that an ultrathin gold island film deposited on non-wetted substrates, such as silica, is effective for time-dependent ex-situ temperature sensing with a fast time response from 5 to 180 s. The sensing mechanism is based on morphological self-organization of the ultrathin gold films upon thermal-induced dewetting. The shift of the characteristic surface plasmon absorption band can behave as effective %26quot;fingerprint%26quot; for temperature recording and allows a rapid readout. Time-dependent dewetting behaviors of the ultrathin films (1.0-5.0 nm) and their effects on surface plasmon resonance were investigated, opening up the possibility for developing nano film-based temperature sensors with controllable sensitivities and fast response.

• 出版日期2014-1-22