The University of Hong Kong's new technology accurately prints nanodiamonds

       A research team led by Dr. JiTae Kim from the Department of Mechanical Engineering and Dr. Zhiqin Chu from the Department of Electrical and Electronic Engineering, Faculty of Engineering, HKU, has successfully developed a nanometer-precision printing method to print NV color centers in diamond nanoparticles at the quantum level. Dr. Zhiqin Chu said that the technology will open up a practical and cost-effective way to manufacture quantum devices such as quantum information processors and biosensors.

It is understood that the processing of quantum materials is difficult. At present, many quantum materials can only be operated in extremely low temperature environments (-150°C/-238°F to zero degrees -273°C/-460°F), while the "rough diamond" in diamond (rough diamond) "NV color centers" can operate at room temperature and are important quantum materials.

Handling nanodiamond particles with "NV color centers", including complex "pick and place" nanomanipulation methods, has previously been unsuccessful in several solutions in the scientific community.

A research team led by Dr. JiTae Kim from the Department of Mechanical Engineering and Dr. Zhiqin Chu from the Department of Electrical and Electronic Engineering of the HKU School of Engineering has directly placed "NV color centers" on a universal substrate by electronically controlling the distribution of sub-liter droplets containing nanodiamonds. Successfully developed a nanometer-precision printing method to print "NV color centers" in diamond nanoparticles at the quantum level.

Dr. Chu Zhiqin said that there is a great need for a flexible, accurate and cost-controlled diamond particle positioning method in scientific research, and the new technology developed this time can meet the relevant technical requirements. He expects the new technology to open up a practical and economical way to make quantum devices such as quantum information processors, quantum calculators and biosensors