Researchers have recreated the Mona Lisa using a new holography technique.
This work was conducted by an international team of researchers from China and the United States, and their findings were published in Applied Physics Reviews.
The researchers used metasurface-based holography, a technique involving a deep-learning algorithm, to generate and refine a hologram of the Mona Lisa.
Holograms are images created by capturing and reconstructing the interference pattern of light or sound waves, used in fields such as entertainment, medical imaging and communication.
According to author Yue-Sheng Wang, metasurfaces are two-dimensional materials composed of tiny, antenna-like structures that help control the phase and amplitude of the waves interacting with the metasurface.
This control aids in the creation of the holographic image.
The team developed a metasurface optimisation method to improve the holographic process.
They used a deep neural network-based algorithm to adjust the antenna-like structures within the metasurface. By reducing discrepancies between the original and holographic image iteratively, they refined the metasurface, improving the hologram's quality.
The researchers used the Mona Lisa as a demonstration of their method's effectiveness, due to its universally recognised features and intricate layer transitions.
The method successfully reconstructed the Mona Lisa, including her left eye in significant detail.
The technique currently produces two-dimensional holograms, but the researchers suggest it could also be used for three-dimensional images.
The team's method allows precise control of sound waves, which they argue is vital for advancing non-invasive medical therapies, effective noise control, and optimising acoustic environments.
They believe that their technique could have significant implications for the field of holography and plan to improve its versatility, compatibility with 3D printing, and reduce the training time required.
If you go
The flights
There are direct flights from Dubai to Sofia with FlyDubai (www.flydubai.com) and Wizz Air (www.wizzair.com), from Dh1,164 and Dh822 return including taxes, respectively.
The trip
Plovdiv is 150km from Sofia, with an hourly bus service taking around 2 hours and costing $16 (Dh58). The Rhodopes can be reached from Sofia in between 2-4hours.
The trip was organised by Bulguides (www.bulguides.com), which organises guided trips throughout Bulgaria. Guiding, accommodation, food and transfers from Plovdiv to the mountains and back costs around 170 USD for a four-day, three-night trip.
KILLING OF QASSEM SULEIMANI
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MATCH INFO
West Ham United 2 (Antonio 73', Ogbonna 90 5')
Tottenham Hotspur 3 (Son 36', Moura 42', Kane 49')
From Europe to the Middle East, economic success brings wealth - and lifestyle diseases
A rise in obesity figures and the need for more public spending is a familiar trend in the developing world as western lifestyles are adopted.
One in five deaths around the world is now caused by bad diet, with obesity the fastest growing global risk. A high body mass index is also the top cause of metabolic diseases relating to death and disability in Kuwait, Qatar and Oman – and second on the list in Bahrain.
In Britain, heart disease, lung cancer and Alzheimer’s remain among the leading causes of death, and people there are spending more time suffering from health problems.
The UK is expected to spend $421.4 billion on healthcare by 2040, up from $239.3 billion in 2014.
And development assistance for health is talking about the financial aid given to governments to support social, environmental development of developing countries.
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
Profile of Foodics
Founders: Ahmad AlZaini and Mosab AlOthmani
Based: Riyadh
Sector: Software
Employees: 150
Amount raised: $8m through seed and Series A - Series B raise ongoing
Funders: Raed Advanced Investment Co, Al-Riyadh Al Walid Investment Co, 500 Falcons, SWM Investment, AlShoaibah SPV, Faith Capital, Technology Investments Co, Savour Holding, Future Resources, Derayah Custody Co.
The National's picks
4.35pm: Tilal Al Khalediah
5.10pm: Continous
5.45pm: Raging Torrent
6.20pm: West Acre
7pm: Flood Zone
7.40pm: Straight No Chaser
8.15pm: Romantic Warrior
8.50pm: Calandogan
9.30pm: Forever Young
Killing of Qassem Suleimani
Killing of Qassem Suleimani
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