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.
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5 of the most-popular Airbnb locations in Dubai
Bobby Grudziecki, chief operating officer of Frank Porter, identifies the five most popular areas in Dubai for those looking to make the most out of their properties and the rates owners can secure:
• Dubai Marina
The Marina and Jumeirah Beach Residence are popular locations, says Mr Grudziecki, due to their closeness to the beach, restaurants and hotels.
Frank Porter’s average Airbnb rent:
One bedroom: Dh482 to Dh739
Two bedroom: Dh627 to Dh960
Three bedroom: Dh721 to Dh1,104
• Downtown
Within walking distance of the Dubai Mall, Burj Khalifa and the famous fountains, this location combines business and leisure. “Sure it’s for tourists,” says Mr Grudziecki. “Though Downtown [still caters to business people] because it’s close to Dubai International Financial Centre."
Frank Porter’s average Airbnb rent:
One bedroom: Dh497 to Dh772
Two bedroom: Dh646 to Dh1,003
Three bedroom: Dh743 to Dh1,154
• City Walk
The rising star of the Dubai property market, this area is lined with pristine sidewalks, boutiques and cafes and close to the new entertainment venue Coca Cola Arena. “Downtown and Marina are pretty much the same prices,” Mr Grudziecki says, “but City Walk is higher.”
Frank Porter’s average Airbnb rent:
One bedroom: Dh524 to Dh809
Two bedroom: Dh682 to Dh1,052
Three bedroom: Dh784 to Dh1,210
• Jumeirah Lake Towers
Dubai Marina’s little brother JLT resides on the other side of Sheikh Zayed road but is still close enough to beachside outlets and attractions. The big selling point for Airbnb renters, however, is that “it’s cheaper than Dubai Marina”, Mr Grudziecki says.
Frank Porter’s average Airbnb rent:
One bedroom: Dh422 to Dh629
Two bedroom: Dh549 to Dh818
Three bedroom: Dh631 to Dh941
• Palm Jumeirah
Palm Jumeirah's proximity to luxury resorts is attractive, especially for big families, says Mr Grudziecki, as Airbnb renters can secure competitive rates on one of the world’s most famous tourist destinations.
Frank Porter’s average Airbnb rent:
One bedroom: Dh503 to Dh770
Two bedroom: Dh654 to Dh1,002
Three bedroom: Dh752 to Dh1,152
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UAE currency: the story behind the money in your pockets
