TPU geologists and chemists propose novel naturally-occurring mineral-based material for optoelectronic applications.
In a groundbreaking discovery, a team of researchers, in collaboration with their international counterparts, has unearthed a remarkable photoresponse phenomenon in a two-dimensional semiconductor, arsenic trisulfide (As2S3), sourced from a Russian quarry mineral. This material exhibits a remarkable photoresponse effect even at low light intensities, which opens up prospects for the development of energy-efficient optoelectronic devices.
TPU geologists and chemists propose novel naturally-occurring mineral-based material for optoelectronic applications.
In a groundbreaking discovery, a team of researchers, in collaboration with their international counterparts, has unearthed a remarkable photoresponse phenomenon in a two-dimensional semiconductor, arsenic trisulfide (As2S3), sourced from a Russian quarry mineral. This material exhibits a remarkable photoresponse effect even at low light intensities, which opens up prospects for the development of energy-efficient optoelectronic devices.
The Securities and Exchange Board of India (Sebi) had carried out a similar exercise in 2017 in a matter related to circulation of messages through WhatsApp. Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders. "Like the bombing of the maternity ward in Mariupol," he said, "Even before it hits the news, you see the videos on the Telegram channels." Unlike Silicon Valley giants such as Facebook and Twitter, which run very public anti-disinformation programs, Brooking said: "Telegram is famously lax or absent in its content moderation policy." Channels are not fully encrypted, end-to-end. All communications on a Telegram channel can be seen by anyone on the channel and are also visible to Telegram. Telegram may be asked by a government to hand over the communications from a channel. Telegram has a history of standing up to Russian government requests for data, but how comfortable you are relying on that history to predict future behavior is up to you. Because Telegram has this data, it may also be stolen by hackers or leaked by an internal employee.
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