He ZHANG, Wenxiong XU, Qiwei LI, Chuansheng XIA, Xiaoxuan WANG, Haibo DING, Chunxiang XU, Qiannan CUI. All-optically Measuring Mechanical Parameters of Bio-surface/interface with Femtosecond Laser Spectroscopy（Invited）[J]. Acta Photonica Sinica, 2022, 51(10): 1032001
- Acta Photonica Sinica
- Vol. 51, Issue 10, 1032001 (2022)
Fig. 1. Femtosecond laser pump-probe system
Fig. 2. Schematic of all-optical generation and detection of GHz acoustic waves
Fig. 3. Investigations of photoacoustic performances of layered MoS2 samples in air
Fig. 4. Comparison of time-resolved ultrafast signals measured in S2 without and with hydrogels
Fig. 5. Spatial dependence of Young's modulus at hydrogel surface
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Table 1. Acoustic velocity and Young' s modulus of hydrogels measured at various positions
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