Room 303, William M.W. Mong Engineering Building, CUHK, Shatin, NT, HK SAR

Based on research published in Science Magazine (2022 & 2019)

Femtosecond Projection NanoPrinter

World's only multi-material 3D nanofabrication platform


Our Products

World's only multi-material nanofabrication platform


Why choose us?

Ultrafast fabrication of arbitrarily complex 3D structures with 15+ materials and nanoscale resolution

Revolutionize your micro-additive manufacturing research and industrial needs with our generalized nanofabrication platform that offers record breaking material compatibility, resolution, and throughput


Who We are



We design and build novel instruments to accelerate discoveries in science and medicine.

Astra Optics Limited, founded by a team of experts in optical engineering, material science, and nanomanufacturing, is a spin-off company from the Chinese University of Hong Kong. Our ground-breaking 3D nanofabrication technology, i.e., femtosecond projection laser patterning system and hydrogel-based multi-material fabrication platform, has proven records to revolutionize the micro-additive manufacturing industry by overcoming critical bottlenecks in current state-of-the-art solutions, namely, low-throughput (~0.1 mm3/hr) and high fabrication cost ($20/mm3). The FP NanoPrinter is the only truly scalable nano-printing solution that simultaneously demonstrates record resolution (20 nm), throughput (100s mm3/hour), and substantially reduced cost ($1.5/mm3), which is three orders of magnitude faster than existing commercial methods.


Our publications in the Science Magazine in 2019 and 2022

  • We will provide femtosecond projection nanoprinter to leading scientists and laboratories in the universities and research institutions across different fields
  • We will provide industry users for the production of micro- and mesoscale devices in micro-lens, and diffractive optical elements etc.
  • Our system offers multi-material compatibility using a hydrogel substrate and two-photon polymerization (using customized photoresins) for different applications, high-resolution, high-rate, and biocompatible nano-printing

Our team