EurekAlert -- One day soon a biosensing nanodevice developed by Arizona State University researcher Wayne Frasch may eliminate long lines at airport security checkpoints and revolutionize health screenings for diseases like anthrax, cancer and antibiotic resistant Staphylococcus aureus (MRSA). Even more incredible than the device itself, is that it is based on the world’s tiniest rotary motor: a biological engine measured on the order of molecules.