能生产3nm！中国成功研发全新DUV光刻：完全不同于ASML
中国科学院成功研发出全新的全固态深紫外(DUV)激光器,可发射波长为193nm的相干光源,具有与ASML等公司现有技术完全不同的设计理念。该激光器采用自制的Yb:YAG晶体放大器生成1030nm的激光,通过两条不同的光学路径进行波长转换,最终生成193nm的激光光束。该技术有望应用于3nm工艺节点的半导体制造。然而,目前该激光器的输出功率仅为70mW,频率为6kHz,仍需进一步提升以满足商业化需求。
芯宇
国际光电工程学会
via Sky forever
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Secret Chats are one of the service’s additional security features; it allows messages to be sent with client-to-client encryption. This setup means that, unlike regular messages, these secret messages can only be accessed from the device’s that initiated and accepted the chat. Additionally, Telegram notes that secret chats leave no trace on the company’s services and offer a self-destruct timer.
Durov said on his Telegram channel today that the two and a half year blockchain and crypto project has been put to sleep. Ironically, after leaving Russia because the government wanted his encryption keys to his social media firm, Durov’s cryptocurrency idea lost steam because of a U.S. court. “The technology we created allowed for an open, free, decentralized exchange of value and ideas. TON had the potential to revolutionize how people store and transfer funds and information,” he wrote on his channel. “Unfortunately, a U.S. court stopped TON from happening.”
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