Nikon Disqualifies Microscopy Winner Over AI Use, Promotes Vietnamese Researcher

Key points

• Nikon disqualified Dr. Ning Xu from the Small World in Motion competition after concluding his video violated rules on generative AI.
• The new winner is Nguyen Nam Nhat of Vietnam, whose entry shows a roundworm and a single-celled Dileptus microorganism.
• Critics, including University of Florida associate professor Edward Phelps, noted biological anomalies in Xu’s footage, such as structures behaving unexpectedly.
• Xu acknowledged using AI to distinguish and color structures in reconstructed grayscale data but denied generating the experimental movie or motion.
• Nikon stated it will revisit its rules and evaluation procedures for future competitions to address the rapid evolution of AI and imaging technologies.

Background

The Nikon Small World in Motion competition, launched in 2011 as a spinoff of the older Small World Photomicrography Competition (established in 1974), aims to showcase the beauty and complexity of microscopic life through video. In September 2026, Dr. Ning Xu of Tsinghua University was initially named the winner for a video capturing the abnormal beating of airway cilia in a child with primary ciliary dyskinesia (PCD). However, the entry faced immediate scrutiny from the scientific community, leading to a suspension and subsequent investigation by Nikon.

How outlets are covering it

While all sources agree on the disqualification and the new winner, they differ in emphasis. CNN highlights the formal statement from Nikon and the specific biological disorder (PCD) depicted in the disqualified video. BBC focuses on the backlash from the scientific community, quoting Dr. Robert Hirst of the University of Leicester, who stated he 'knew immediately' the video was fabricated and noted that the cells did not resemble those from PCD patients. Ars Technica provides the most detailed breakdown of the new rankings, listing the second through fifth place winners, and notes that some researchers spotted AI watermarks in the source files. Ars also clarifies that the competition has been running for 15 years, whereas BBC notes the broader 15-year history of the contest series.

Why it matters

This incident underscores the growing tension between artistic visualization and scientific integrity in microscopy. As AI tools become more sophisticated, distinguishing between genuine biological data and AI-generated or altered imagery becomes increasingly difficult. Nikon’s decision to revise its rules signals a broader industry shift toward stricter verification standards for scientific imaging, ensuring that the integrity of microscopic observations is maintained in the age of generative AI.

What to watch

Nikon has indicated it will revisit its rules and evaluation procedures for future entries of the Small World and Small World in Motion competitions. The company aims to address the challenges posed by rapid advances in imaging and artificial intelligence. Additionally, the scientific community may continue to scrutinize other entries for AI artifacts, potentially leading to further disqualifications or stricter verification processes in similar contests.