John Sandford O'Neill

PhD Student, University of Oxford

About John Sandford O'Neill

PhD student at the University of Oxford working on next-generation Soft Matter Photonics technologies. My research brings together laser micro-machining and the science & technology of liquid crystals & polymers. I use a titanium-sapphire femtosecond laser to create microscale polymer structures directly inside electrically-controlled liquid crystal devices. In 2019 I was awarded the Institution of Engineering and Technology's Leslie H. Paddle scholarship.

Subject

Polymer chemistry Materials chemistry

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Bringing Order to Disorder in Liquid Crystals

We have found a way to fabricate and stabilise topological defects in liquid crystals using laser fabrication. What are topological defects? How can they be used? And what does all of this have to do with fish and mobile phone screens?!

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