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Get a daily digest of the latest news in tech, science, and technology, delivered right to your mailbox. Subscribe now.Boasting an impressive 400,000 pixels, this innovative leap represents a four-hundred-fold increase in pixel count compared to any other device of its kind, revolutionizing the way scientists can capture faint light signals from the far reaches of space or explore intricate details within the human brain.
They tackled the issue of scalability, which had previously hampered the increase in pixel count due to the necessity of cooling superconducting components to ultralow temperatures., when chilled to near absolute zero, allow electric current to flow with zero resistance. So when a photon strikes a pixel, essentially an area of the superconducting material, it shuts down conductivity at that precise location.
To circumvent this issue, the NIST team employed a unique approach, combining the signals from multiple pixels onto a few room-temperature readout wires. When a photon strikes a pixel, it generates a hotspot on the readout wire, producing two voltage pulses that travel in opposite directions. The time it takes for these pulses to reach the end detectors reveals the pixel's column.
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