On September 27th, Professor Wang Zhiming from the Institute for Basic and Frontier Research at the University of Electronic Science and Technology of China (UESTC) published a groundbreaking paper titled *"Laser Streaming: Turning a Laser Beam into a Flow of Liquid"* in *Science Advances*, one of the leading scientific journals under the *Science* publishing group. The study was co-authored by Wang Yanan, a postdoctoral researcher at the same institute, with Professor Wang Zhiming and Professor Bao Jiming serving as corresponding authors. This marks the first time that UESTC has been listed as the primary affiliation on a *Science Advances* article, and the paper was featured as the top story on the journal’s official website — a significant milestone for the university.
The research was initially shared as a preprint on arXiv.org and quickly gained attention from major international tech media, including *MIT Technology Review*, *AZoNano*, and *Laser Focus World*, within just 1.5 months. The work introduces a novel concept called "photohydrodynamics," which enables the use of pulsed lasers to generate continuous, high-speed liquid flow in pure water. This mechanism combines two fundamental physical phenomena: the photoacoustic effect and the acoustic wave-driven fluid motion.
In their experiment, the team used a nanosecond laser to irradiate a glass cuvette filled with a gold nanoparticle dispersion. After exposure, a microcavity with gold nanoparticles attached to its walls was formed. Under the pulsed laser, these nanoparticles underwent rapid volume expansion and contraction, generating ultrasonic waves. These directional, high-frequency sound waves then drove the liquid to flow through the acoustic wave driving effect. The microcavity played a crucial role in linking the two processes. Once formed, it allowed the researchers to replace the nanoparticle dispersion with pure water or other solutions, demonstrating the system's versatility.
This innovative approach highlights the potential of integrating nanophotonics, acoustics, microfluidics, and materials science for developing optically controlled or triggered microstructured devices. The findings open up new possibilities for future applications in lab-on-a-chip systems, precision fluid control, and optical actuation technologies.
Dr. Wang Yanan, a postdoc in Professor Wang Zhiming’s team at UESTC and also affiliated with Professor Bao Jiming’s group at the University of Houston, specializes in nanophotonics and low-dimensional materials. Since joining the postdoctoral program, he has made notable contributions, including publishing a paper on distinguishing thermal lens effects from nonlinear self-phase modulation in liquid suspensions of 2D nanomaterials in *Nanoscale*. He has also participated in over 10 SCI-indexed publications, several appearing in high-impact journals such as *Advanced Materials*, *Chemistry of Materials*, and *ACS Photonics*.
*Science Advances* is an open-access journal published by the American Association for the Advancement of Science (AAAS), dedicated to showcasing impactful and cutting-edge research across all scientific disciplines.
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