WhatFinger

Researchers rewrote the binary data in the first line of a 24-bit memory array (top image, red arrow) using molecules of hydrogen to encode the letter “M”

Atomic-scale manufacturing method could enable ultra-efficient computers


As computers continue to infiltrate almost every aspect of modern life, their negative impact on the environment grows. According to recent estimates, the electricity required to power today’s computers releases a total of more than 1 gigatonne of carbon emissions to the atmosphere each year. Now, researchers reporting in ACS Nano have developed a new manufacturing process that could enable ultra-efficient atomic computers that store more data and consume 100 times less power. Scientists have previously manipulated single atoms to make ultra-dense memory arrays for computers, which store more data in a much smaller space than conventional hard drives and consume much less power. In a technique known as hydrogen lithography, researchers use the tip of a scanning tunneling microscope (STM) to remove single atoms of hydrogen bonded to a silicon surface.
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