Nikon Disqualifies Small World in Motion Winner Over AI Use, CNN Reports

Nikon Disqualifies Ning Xu From Small World in Motion

Nikon disqualified the winning video of its Small World in Motion competition on October 9, 2026, after concluding that the submission broke contest rules against generative artificial intelligence, CNN reported. Dr. Ning Xu, an optical engineering researcher at the National University of Singapore whose work was associated with Tsinghua University, originally won first place in September for footage capturing the beating of airway cilia in a child with primary ciliary dyskinesia.

The Tech TL;DR:

• Nikon revoked Ning Xu’s first-place prize in the Small World in Motion competition over generative AI use.
• Microscopy experts publicly challenged the biological plausibility of the footage on LinkedIn, triggering an internal review.
• Nguyen Nam Nhat of Vietnam is now the official winner with a video of a roundworm and a Dileptus microorganism.

Controversy on LinkedIn and Expert Scrutiny

The disqualification followed heavy public criticism from scientific experts on LinkedIn who questioned the video’s structural integrity. University of Florida associate professor Edward Phelps pointed out that several purple structures popped in and out of existence while green cilia appeared from nowhere without matching known biological sizes. Dr. Robert Hirst, lead scientist for the NHS centre for PCD diagnosis at the University of Leicester, stated he knew immediately the video was fabricated because the cells looked nothing like those from actual patients.

In response to the backlash, Xu defended his methodology in a series of LinkedIn comments. He stated that artificial intelligence was not used to generate the experimental movie, the cilia, or their movement. Instead, he maintained that the technology was applied afterward to reconstructed grayscale data to distinguish and color structures with similar morphology. Other observers spotted what looked like AI watermarks embedded within the source files, intensifying the debate over digital post-processing standards in scientific imaging.

Nikon Adjusts Rankings After Xu's Disqualification

Following Xu’s disqualification, Nikon adjusted the competition rankings accordingly. Nguyen Nam Nhat of Vietnam moved into first place with a video featuring a tiny roundworm and a single-celled Dileptus. Benedikt Pleyer of Bavaria, Germany, moved to second place with jellyfish larvae; Andrew Moore of the Howard Hughes Medical Institute secured third place with synchronized cell division; Patrick Hickey of Hypha Research Ltd. took fourth place with mitochondrial and chloroplast dynamics in Turtle Vine leaf cells; and Igor Adameyko placed fifth with a sea slug.

PetaPixel reported that Nikon issued a formal statement explaining that the decision was based solely on the submitted video’s eligibility under competition rules and should not be interpreted as a judgment of Xu’s professional reputation or scientific contributions. Nikon acknowledged that rapid advances in imaging and artificial intelligence create new challenges, prompting the organization to revisit its rules and evaluation procedures for future competitions.

# Sample CLI verification pipeline for microscopy metadata inspection
exiftool -G1 -a -s submitted_microscopy_file.mp4
ffmpeg -i submitted_microscopy_file.mp4 -vf "select=eq(pict_type,I)" -vsync vfr frame_%03d.png