Schartner, E.Henderson, M.Purdey, M.Monro, T.Gill, P.Callen, D.2018-03-262018-03-262017Proceedings of the 29th IEEE Photonics Conference (IPC 2016), 2017, pp.1-2150901907397815090190692374-0140http://hdl.handle.net/2440/111264We demonstrate the use of a portable optical setup based on polymer coatings on the tip of an optical fibers that is capable of differentiating between tumorous and healthy tissue in human samples by probing the extracellular pH of the surface.en©2016 IEEEConference paper003006596810.1109/IPCon.2016.78311470004068801000082-s2.0-85014173993292786Schartner, E. [0000-0003-1669-4302]Purdey, M. [0000-0002-5063-8972]Gill, P. [0000-0001-7310-2970]Callen, D. [0000-0002-6189-9991]