Quartz-enhanced conductance spectroscopy for nanomechanical analysis of polymer wire | Zendy

Huadan Zheng | Zendy; Xukun Yin | Zendy; Guofeng Zhang | Zendy; Lei Dong | Zendy; Hongpeng Wu | Zendy; Xiaoli Liu | Zendy; Weiguang Ma | Zendy; Lei Zhang | Zendy; Wangbao Yin | Zendy; Liantuan Xiao | Zendy; Suotang Jia | Zendy; Frank K. Tittel | Zendy

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Quartz-enhanced conductance spectroscopy for nanomechanical analysis of polymer wire

Author(s) -

Huadan Zheng,

Xukun Yin,

Guofeng Zhang,

Lei Dong,

Hongpeng Wu,

Xiaoli Liu,

Weiguang Ma,

Lei Zhang,

Wangbao Yin,

Liantuan Xiao,

Suotang Jia,

Frank K. Tittel

Publication year - 2015

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4936648

Subject(s) - conductance , materials science , polymer , resonator , spectroscopy , analytical chemistry (journal) , quartz crystal microbalance , cantilever , resonance (particle physics) , dynamic mechanical analysis , electrical resistivity and conductivity , composite material , optoelectronics , chemistry , atomic physics , condensed matter physics , physics , organic chemistry , quantum mechanics , adsorption , engineering , chromatography , electrical engineering

Quartz-enhanced conductance spectroscopy is developed as an analytical tool to investigate dynamic nanomechanical behaviors of polymer wires, in order to determine the glass transition temperature (Tg). A polymethyl methacrylate (PMMA) microwire with a diameter of 10 μm was bridged across the prongs of a quartz tuning fork (QTF). With the advantage of QTF self-sensing as compared with micro-cantilevers or other resonators, the resonance frequency and Q factor can be directly determined by means of its electrical conductance spectra with respect to the frequency of the external excitation source (dI/dV vs f), and therefore, no optical beam is required. The Tg of the PMMA microwire was determined by the maximum loss modulus of the QTF, calculated from the resonance frequency and the Q factor as a function of temperature. The measured Tg of the PMMA is 103 °C with an error of ±2 °C. Both heating/cooling and physical aging experiments were carried out, demonstrating that the technique is both reversible and reproducible

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