The experts found that the crystals of Iysozymekl, a model protein that is abundant in egg whites of birds as well as in the tears, saliva and milk of mammals, can generate electricity when pressed. This process is known as piezoelectricity and has been used with other materials including quartz, which make mobile phones vibrate.

The full paper, The Direct Piezoelectric Effect in the Globular Protein Lysozyme, by Aimee Stapleton, Mohamed R Noor, John Sweeney, Vincent Casey, Andrei Kholkin, Christophe Silien, Abbasi A. Gandhi, Tewfik Soulimane and Syed A M Tofail, published on October 2 in the journal, Applied Physics Letters.