Dr Ning Xu, a researcher at Tsinghua University in China, won the Nikon Small World in Motion contest for a video showing cilia movement in a child with primary ciliary dyskinesia. However, other scientists accused him of using AI to alter his footage, questioning its authenticity and natural appearance. Xu admitted to using AI post-production for coloring but denied altering the scientific content itself. Nikon is now investigating the claims as the distinction between enhancing visuals and fabricating elements becomes a point of contention in the scientific community.
Written locally by qwen2.5:14b on 2026-10-02,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
A contestant of a microscopy competition has been condemned by the scientific community for allegedly using AI to create his winning video.
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contestant → condemn → video
Dr Ning Xu, a researcher at Tsinghua University in China at the time, faced shattering backlash after he was accused of using AI to alter his entry that won this year's annual Nikon Small World in Motion contest.
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that → face → contest
The annual contest celebrates videos and pictures of subjects too tiny to see with the naked eye, normally taken with the use of a powerful microscope.
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contest → celebrate → microscope
It has a prize of $3,000 (£2,250).
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It → have → 3,000
Dr Xu won the top prize for a short film in which he purportedly showed minuscule hair-like structures, called cilia, moving in the airways of a child suffering with the rare inherited disease, primary ciliary dyskinesia (PCD).
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he → win → disease
Questions, however, quickly arose after Nikon announced the result on social media in September – as scientists started to probe the video's authenticity.
Some critics challenged the 'unnatural' movement of the cilia, which were tinted bright green, while others queried the size of the hair-like structures.
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others → arise → structures
Ian Donovan, a doctoral student at UT Southwestern Medical Center in Texas, argued that one version of the film seemingly featured a Google SynthID watermark – used to mark content made or edited with Google AI.
While Edward Phelps, an associate professor at the University of Florida, claimed some of the cilia appeared to 'pop in and out of existence'.
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some → argue → existence
Dr Ning Xu faced shattering backlash after he was accused of using AI to alter his entry for the annual Nikon Small World in Motion contest (pictured)
Dr Xu jumped to deny that AI had been used to create the scientific footage itself, but confessed to using it later to produce the bright green colour.
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AI → face → colour
Writing online, he said AI had not created 'the experimental movie, the cilia, or their motion'.
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AI → write → movie
Yet admitted it had been used aesthetically to change the colour from black and white, saying: '[AI] was applied afterwards to the reconstructed grayscale data to distinguish and colour structures with similar morphology.
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AI → admit → morphology
'
'For me, the important distinction is between using an image to make a scientific claim and using visualization to communicate the beauty of scientific data,' added Dr Xu.
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Xu → use → data
'Both can have a place, as long as we are clear about which is which.'
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which → have → place
Nikon has since said it has launched an investigation, saying it is 'carefully re-reviewing the information' given by the researcher.
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it → say → researcher
In a LinkedIn post on Saturday, Nikon said: 'Xu is respectfully complying and has provided detailed technical documentation outlining the microscopy equipment, imaging methods, and processing techniques used to create the source video.
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Xu → say → video
It is not uncommon for scientific images or videos to be coloured so that they are easier to see.
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they → colour → ?
The judges of the competition will be challenged with determining whether AI was used to emphasise details already present in the original video, or whether it was used to create elements that weren't already there.
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that → challenge → elements
The competition, which is in its 16th leg, bans the use of AI-generated videos.
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which → ban → videos
In a statement, Nikon said 'at this time, we don't see that any rules were violated.'
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rules → say → time
Dr Patrick Hickey, who placed fifth in the 2026 Small World contest, said the honour and recognition that comes with the award means more than the $3,000 (£2,250) prize itself.
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that → place → prize
'If you spend a lot of your time in a dark room looking down a microscope, it's really nice to be able to show people and to show the public,' he said.
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he → spend → public
'There's an interesting fusion between science and art, and a lot of the images that scientists are making have some very abstract and artistic qualities to them.'
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scientists → be → them
Dr Hickey said it would be unfair on other entrants if it emerged the winning video was unfairly altered by AI.
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video → say → AI
'There's a specific set of rules in the contest, and one of them was quite clearly that you couldn't use generative AI to produce things, and the other was obviously that it has to be taken under a microscope,' he said.
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he → be → microscope
Dr Xu's entry was named: Rendition of abnormal beating of airway cilia from a child with Primary Ciliary Dyskinesia (PCD), a genetic disorder affecting respiratory function.
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entry → name → function
Tsinghua University has been contacted for comment.
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University → contact → comment
Attempts were made to contact Dr Xu.
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Attempts → make → Xu
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