The photothermal and photoacoustic properties of Ti3C2Tx. (IMAGE)
Caption
Fig. 2 | The photothermal and photoacoustic properties of Ti3C2Tx. (a) A pulse laser periodically regulates the photothermal temperature field of Ti3C2Tx inducing PDMS to excite ultrasound waves, middle image: bare fiber end face, right image: FPE physical image. Scale bar: 50 mm. (b) Photothermal conversion mechanism of Ti3C2Tx, i: pulse laser radiation, ii: LSPR effect, iii: electron transitions, iv: electron-phonon coupling, v: lattice vibration, vi: lattice temperature rise. Temperature change curves (c) and infrared thermal images (d) of Ti3C2Tx concentration: 1.0 wt%, 0.8 wt%, 0.5 wt%, 0.25 wt%, and pure water (1064 nm, 0.45 g, 0.27 W). (e) Fitting lines of time and -ln(φ) during the cooling process of Ti3C2Tx (1.0 wt%, 0.27 W). (f) Temperature evolution of the Ti3C2Tx in an aqueous dispersion under irradiation with a 1064 nm laser at 0.22 W, 0.25 W, and 0.27 W (1.0 wt%). (g) Time domain waveform of FPE excited ultrasound at different pulse laser energy densities. FPE axial acoustic field testing (h) and multiphysics simulation results (i).
Credit
Jiapu Li, Xinghua Liu, Zhuohua Xiao, Zhengying Li, Xinghua Liu
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