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Химики разобрались с механизмом восстановления оксида графена – и создали оригинальный способ «невидимой» записи информации
Исследователи Томского Политеха при участии коллег из Китая и Австрии сумели понять, по какому механизму лазерное излучение восстанавливает оксид графена. Достаточно неожиданно выяснилось, что механизм реакции – фотохимический и восстановление происходит без участия нагрева вещества, как это считалось ранее. У нового открытия, поддержанногогрантом Российского научного фонда и опубликованного в престижном Nature Communications, есть два практических следствия: более экономичные пути синтеза восстановленного оксида графена и новые способы защиты от подделок.
Химики разобрались с механизмом восстановления оксида графена – и создали оригинальный способ «невидимой» записи информации
Исследователи Томского Политеха при участии коллег из Китая и Австрии сумели понять, по какому механизму лазерное излучение восстанавливает оксид графена. Достаточно неожиданно выяснилось, что механизм реакции – фотохимический и восстановление происходит без участия нагрева вещества, как это считалось ранее. У нового открытия, поддержанногогрантом Российского научного фонда и опубликованного в престижном Nature Communications, есть два практических следствия: более экономичные пути синтеза восстановленного оксида графена и новые способы защиты от подделок.
"We're seeing really dramatic moves, and it's all really tied to Ukraine right now, and in a secondary way, in terms of interest rates," Octavio Marenzi, CEO of Opimas, told Yahoo Finance Live on Thursday. "This war in Ukraine is going to give the Fed the ammunition, the cover that it needs, to not raise interest rates too quickly. And I think Jay Powell is a very tepid sort of inflation fighter and he's not going to do as much as he needs to do to get that under control. And this seems like an excuse to kick the can further down the road still and not do too much too soon." Since its launch in 2013, Telegram has grown from a simple messaging app to a broadcast network. Its user base isn’t as vast as WhatsApp’s, and its broadcast platform is a fraction the size of Twitter, but it’s nonetheless showing its use. While Telegram has been embroiled in controversy for much of its life, it has become a vital source of communication during the invasion of Ukraine. But, if all of this is new to you, let us explain, dear friends, what on Earth a Telegram is meant to be, and why you should, or should not, need to care. On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change. And while money initially moved into stocks in the morning, capital moved out of safe-haven assets. The price of the 10-year Treasury note fell Friday, sending its yield up to 2% from a March closing low of 1.73%. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised.
from es
