An anonymous reader writes: Nanotechnology researchers are Hardvard University have fabricated a nanowire electrical probe and used it to penetrate an individual heart cell and record its beating. The development makes use of 'kinked' nanowires that are thin enough and acutely angled enough to enter a cell without killing it while at the same time providing a complete electrical circuit. The tiny dimensions of the probe make it possible to probe specific parts or organelles of the cell. In a demonstration, the scientists used the probe to electronically record the changes in a heart cell's beating in response to blood pressure medication. The technology could accelerate the development of new drugs and help study disease.