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Micro and Nano Systems Letters
Fig. 3 | Micro and Nano Systems Letters

Fig. 3

From: Multiple ratiometric nanothermometry using semiconductor BiFeO3 nanowires and quantitative validation of thermal sensitivity

Fig. 3

a Optical images of BFO nanowire samples under the sunlight (300 K) and under UV (λlamp = 254 nm) illumination (300 K, 330 K, and 360 K). b Optical transparency of BFO nanowires under sunlight and under UV illumination (λlamp = 254 nm) at 300 K. Enlarged image shows an AFM image of BFO nanowires. c The raw Psi and Delta measured by ellipsometry and fitted optical model. The real and imaginary component of refractive index with respect to (d) incident photon energy (325 K, 375 K, 425 K, 375 K, 525 K, and 575 K) and (e) temperature (at 2.5 eV)

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