Researchers at The University of Osaka have achieved a groundbreaking advancement in particle acceleration with micronozzle acceleration (MNA). This novel concept involves designing microtargets with tiny nozzle-like features to irradiate them with ultraintense, ultrashort laser pulses, resulting in the generation of high-quality proton beams with energies exceeding 1 GeV. The MNA method allows for sustained, stepwise acceleration of protons within a powerful electric field, offering superior beam quality and stability compared to traditional methods. The implications of this breakthrough are wide-ranging. It can support fast ignition schemes in laser-driven nuclear fusion, enable more compact and precise systems for proton cancer therapy, and create conditions for simulating extreme astrophysical environments. The study, published in Scientific Reports, highlights the potential of MNA to revolutionize fields such as laser fusion energy, radiotherapy, and laboratory-scale astrophysics. Simulations conducted on the SQUID supercomputer demonstrate the feasibility of compact GeV proton acceleration using microstructured targets. Prof. Masakatsu Murakami, the lead researcher, emphasizes the game-changing nature of this discovery, envisioning a future where compact, high-efficiency particle acceleration could redefine various scientific and technological domains.