[HN Gopher] TaIrTe4 photodetectors show promise for sensitive ro...
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TaIrTe4 photodetectors show promise for sensitive room-temperature
THz sensing
Author : wglb
Score : 13 points
Date : 2025-07-06 16:53 UTC (3 days ago)
(HTM) web link (phys.org)
(TXT) w3m dump (phys.org)
| wglb wrote:
| The paper in Nature:
| https://www.nature.com/articles/s41928-025-01397-z
| Y_Y wrote:
| > We fabricated Har bar geometry sensing devices using atomically
| thin TaIrTe4,
|
| I've never heard of a "Har bar" not its geometry, but apparently
| neither has Google.
| perching_aix wrote:
| GPT-4o did hear of a "Hall bar geometry" though and suggested
| it's a typo. That one does return results on Google as well,
| and makes sense in context too.
| meepmorp wrote:
| Yeah, there's this line in the original paper:
|
| > Accordingly, we measured the nonlinear Hall transport in a
| few-layer sample with a Hall bar device geometry at room
| temperature
| DFHippie wrote:
| Tantalum, iridium, and tellurium? How expensive is this stuff?
| philipkglass wrote:
| These materials are pretty expensive. Tellurium is currently
| about $86/kg, tantalum $430/kg, and iridium $140,000/kg:
|
| https://www.dailymetalprice.com/metalpricecharts.php?c=ir&u=...
|
| https://www.metal.com/en/markets/20
|
| But it's a "2d material" so it only takes a tiny atomically
| thin quantity of these elements to build a detector:
|
| https://news.columbia.edu/news/what-are-2d-materials-and-why...
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(page generated 2025-07-09 23:01 UTC)