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13-02-2023, 07:06 AM
Josiah Teo and Lucas Tan
UPDATED 11 HOURS AGO
SINGAPORE – A team of seven scientists from Nanyang Technological University (NTU) is the first in the world to demonstrate an 83-year-old quantum physics theory, in a breakthrough that will pave the way for more precise X-ray imaging.
The team, led by NTU’s Nanyang Assistant Professor Wong Liang Jie from the School of Electrical and Electronic Engineering, successfully showed in experiments that X-rays are emitted at lower energy levels, as predicted by quantum recoil theory, when charged particles such as electrons pass through a material to produce radiation.
Harnessing quantum recoil, which has eluded scientists for decades, will enable more precise X-ray machines to be developed for imaging human tissue samples and detecting flaws in semiconductor chips.
......
Russian physicist Vitaly Ginzburg hypothesised in 1940 that the energy of the radiation would be lower than what is predicted by classical physics.
This would happen as a result of electrons slowing down and getting deflected as they interact with the atoms of the material they pass through.
This phenomenon is known as “quantum recoil”.
......
Proving quantum recoil had frustrated scientists for decades.
......
The team is working with Singapore biomedical equipment manufacturing company CTmetrix to develop more compact and precise tunable biomedical X-ray machines. They aim to have a prototype ready by the end of 2023.
https://www.straitstimes.com/singapore/n...ay-imaging
UPDATED 11 HOURS AGO
SINGAPORE – A team of seven scientists from Nanyang Technological University (NTU) is the first in the world to demonstrate an 83-year-old quantum physics theory, in a breakthrough that will pave the way for more precise X-ray imaging.
The team, led by NTU’s Nanyang Assistant Professor Wong Liang Jie from the School of Electrical and Electronic Engineering, successfully showed in experiments that X-rays are emitted at lower energy levels, as predicted by quantum recoil theory, when charged particles such as electrons pass through a material to produce radiation.
Harnessing quantum recoil, which has eluded scientists for decades, will enable more precise X-ray machines to be developed for imaging human tissue samples and detecting flaws in semiconductor chips.
......
Russian physicist Vitaly Ginzburg hypothesised in 1940 that the energy of the radiation would be lower than what is predicted by classical physics.
This would happen as a result of electrons slowing down and getting deflected as they interact with the atoms of the material they pass through.
This phenomenon is known as “quantum recoil”.
......
Proving quantum recoil had frustrated scientists for decades.
......
The team is working with Singapore biomedical equipment manufacturing company CTmetrix to develop more compact and precise tunable biomedical X-ray machines. They aim to have a prototype ready by the end of 2023.
https://www.straitstimes.com/singapore/n...ay-imaging
![[Image: ONLINE-230212-Quantum-RecoilNEW.jpg?Vers...CQd34chzFY]](https://static1.straitstimes.com.sg/s3fs-public/articles/2023/02/12/ONLINE-230212-Quantum-RecoilNEW.jpg?VersionId=whEI.gRsapv6AUZ4Moj005CQd34chzFY)
