Noninvasive technology can read closed books
25 September 2002
News
A form of electromagnetic imaging which is sensitive enough to 'see' writing on each page in a book, while the cover remains closed, has been developed by researchers. Called terahertz imaging, the technique offers scholars and the wider public the opportunity for examining the contents of precious books and manuscripts without contributing to their deterioration which is likely, if they are handled frequently.
As well as looking at historical documents and watermarks, the researchers will work with the York Archaeological Trust and take images of paintings and ceramics. They will discover what lies beneath the outer painting or glaze and be able to identify the substances involved. This can provide important information on the creation of the artefact and the technologies used by its maker.
Dr Nikolay Zinovev (left), from St Petersburg, Russia, places a book in the imaging system located in the Institute of Microwave and Photonics, at the University of Leeds, England. Principal researcher Dr Robert Miles looks on
Dr Miles explained: "Until now, we have been concentrating on the medical applications of the technology. Unlike X-rays, terahertz waves are not harmful, so there are no exposure worries for practitioners or patients." Terahertz imaging is sensitive enough to show the chemical nature of the object studied. Terahertz waves make molecules vibrate and the frequency of the vibration reveals the chemicals present and also if there are chemical reactions taking place - features of the technology which greatly increase the range of its application."
The technology can also be applied to determine the composition of foodstuffs, as well as for analysing the wear and tear of fibres that are used in advanced clothing (such as breathable clothing) and industrial situations.
For more information contact the School of Electronic and Electrical Engineering, University of Leeds, UK, [email protected] or see www.teravision.org
Further reading:
From the editor's desk: AI – a double-edged sword
Technews Publishing
News
As with any powerful tool, AI presents challenges, some of which, if not carefully managed, threaten to undo the potential that it can offer.
Read more...
Global semiconductor sales increase
News
The Semiconductor Industry Association (SIA) has announced global semiconductor sales were $57,0 billion during the month of April 2025, an increase of 2,5% compared to the March 2025.
Read more...
Avnet Abacus announced new president
Avnet Abacus
News
Avnet Abacus has announced that Mario Merino will succeed Rudy Van Parijs as president of Avnet Abacus, effective 1 July 2025.
Read more...
Avnet Abacus wins multiple prestigious awards
Avnet Abacus
News
The awards from Molex recognise outstanding performance, collaboration, and significant growth in the challenging market conditions of 2024.
Read more...
Components distribution slowdown Q1 2025
News
European components distribution (DMASS) experienced a continued slowdown in the first quarter 2025.
Read more...
Semiconductor sales increase 17% YoY
News
The Semiconductor Industry Association (SIA) recently announced global semiconductor sales were $54,9 billion during the month of February 2025, an increase of 17,1% compared to the February 2024 total.
Read more...
Silicon Labs – Q1 results
News
Silicon Labs, a leading innovator in low-power wireless, recently reported financial results for the first quarter, which ended April 5, 2025.
Read more...
Strengthening industry through strategic partnerships at KITE 2025
Specialised Exhibitions
News
The KwaZulu-Natal Industrial Technology Exhibition is not just an exhibition, it is a powerhouse of industry collaboration where visitors and exhibitors gain access to authoritative insights, technical expertise, and high-impact networking opportunities.
Read more...
Solar Youth Project calls on industry to step up
News
With the second cohort completed training and the first cohort returning for their final module, host companies are urgently needed to turn the training into a long-term opportunity.
Read more...
Conlog powers SA’s future with national smart meter rollout
News
Conlog recently secured the RT29-2024 contract from National Treasury, which is seen to be a major milestone towards modernising SA’s utility infrastructure.
Read more...
printer friendly version