Publications by authors named "Huade Mao"
Article Synopsis
- A dielectric microsphere can gather light into a photonic nanojet (PNJ) that moves towards a near-infrared laser, while it was previously thought Janus particles with a metal layer couldn't stable produce PNJs.
- Researchers found that synthetic Janus particles can also generate a PNJ and experience a backaction force due to their unique composition, even with non-resonant light.
- The study reveals that these Janus particles show a unique hysteresis effect in the backaction force based on laser power changes, suggesting potential applications in manipulating and sorting irregular particles using light.
Reversible control over the microparticle motion using light excites interesting applications in optofluidics, microswimmers, artificial optical matter, and biomedical engineering. The dielectric microspheres swim towards the near infrared pulsed laser in response to the backaction force mediated by photonic nanojet. Hereby, we report that the backaction force exhibits hysteretic behaviour owing to the distinguishable responses of the temperature rise inside the nanojet and the temperature rise of the liquid ensemble.
View Article and Find Full Text PDFWe report the first, to the best of our knowledge, demonstration of Grüneisen relaxation photoacoustic microscopy (GR-PAM) of lipid-rich tissue imaging at the 1.7 µm band, implemented with a high-energy thulium-doped fiber laser and a fiber-based delay line. GR-PAM enhances the image contrast by intensifying the region of strong absorbers and suppressing out-of-focus signals.
View Article and Find Full Text PDF