A Highly Sensitive Light-Induced Thermoelastic Spectroscopy Sensor Using a Charge Amplifier to Improve the Signal-to-Noise Ratio.

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Tác giả: Ying He, Hanxu Ma, Yufei Ma, Shunda Qiao

Ngôn ngữ: eng

Ký hiệu phân loại: 536.57 High temperatures

Thông tin xuất bản: Switzerland : Sensors (Basel, Switzerland) , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 80368

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A highly sensitive light-induced thermoelastic spectroscopy (LITES) sensor employing a charge amplifier (CA) is reported for the first time in this invited paper. CA has the merits of high input impedance and strong anti-interference ability. The usually used transimpedance amplifier (TA) and voltage amplifier (VA) were also studied under the same conditions for comparison. A standard commercial quartz tuning fork (QTF) with a resonant frequency of approximately 32.76 kHz was used as the photothermal signal transducer. Methane (CH

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