A team led by Aydogan Ozcan, a professor of electrical engineering and bioengineering at the UCLA Henry Samueli School of Engineering and Applied Science, Los Angeles, has created a portable smartphone attachment that can be used to perform sophisticated field testing to detect viruses and bacteria without the need for bulky and expensive microscopes and lab equipment. The device weighs less than half a pound.

The device can discern a single human cytomegalovirus (HCMV) particle measuring no more than 130-150 nanometers, and also was able to distinguish nanoparticles ¯ specially marked fluorescent beads made of polystyrene ¯ as small as 90–100 nanometers.

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