News
Quantum dots may be the way to create a three-layer high-resolution image sensor
Researchers in the US and Korea are developing three-layer sensors based on quantum dots (QD). The result of their work can be low-cost flexible sensors with a wide dynamic range, allowing you to get full-color images without the demosaicing step, which is inevitable when using a sensor with an array of primary color subpixels lying in the same plane.
Quantum dots are nanoscale semiconductor crystals whose size and composition can be used to “tune” the frequency of the light they absorb or emit. Researchers at Northwestern Illinois University and three South Korean universities have focused their efforts on building a three-layer sensor that absorbs different frequencies of light at different depths. More specifically, the “red” quantum dots in the sensor being developed are actually sensitive to red, green, and blue light. The “green” dots, in turn, are sensitive to green and blue, and only the blue dots are fully selective.
Conceptually, this may resemble a Foveon multi-layer CMOS sensor, but turned upside down. The sensing elements in the top layer of Foveon respond to the R, G and B components, while in the quantum dot sensor the top layer detects only B. The middle layer of the Foveon sensor registers R and G, and the middle layer of the QD sensor registers G and B. Finally , the bottom layer of Foveon captures R, and the bottom layer of the quantum dot sensor captures all three components.
Each pixel of the sensor allows you to determine either the color of the light falling on it or the brightness, but the researchers were able to get around this limitation by complicating the circuit.
Although development is at an early stage, the area of study already includes production issues. Thus, it is known that existing technologies can be used to fix quantum dots in the right place and to transfer the charge by building up the sensor in layers and fixing the layers with ultraviolet light.
The sensor on a flexible substrate, created by the researchers, is characterized by a density of 5,500 sensor elements per square centimeter. This is about 3.5 times higher than that achieved in previous similar projects, but is still far from practical applications, since it corresponds to a full-frame sensor with a resolution of less than 50,000 pixels.
Software
It’s official: Windows 11’s next big update is arriving. With Copilot chatbot, RAR support and more
Microsoft has announced the release date for the next major feature update to the Windows 11 operating system. The version is labeled 23H2 and will become available on September 26, 2023.
The update will include a new AI-powered Windows Copilot feature, a redesigned Explorer, a new Ink Anywhere feature for stylus users, significant improvements to the Paint graphics editor, native support for RAR and 7-zip files, a new volume mixer, and more.
Windows Copilot is a major new feature in Windows 11 23H2 that brings the Bing Chat chatbot directly to the Windows 11 desktop. The new Copilot appears as a sidebar, making it easy to manage settings on your PC, launch apps, or simply get answers to questions. Copilot is also integrated throughout the operating system, with Microsoft executives demonstrating the use of Copilot to write text messages using data from your calendar, Outlook, and more.
Ink Anywhere lets you handwrite with a Surface Pen or other stylus in any text field, anywhere on Windows. The OS converts what the user writes into text. There will also be built-in RGB lighting controls for gaming devices such as keyboards, mice, monitors, case fans, and so on.
The improved Windows Backup app will allow you to back up data to your PC when you want to move to a new device. Existing settings will automatically be transferred to the new PC, even pinned applications in the Start menu and taskbar, all applications from the Microsoft Store will be automatically restored.
The YouTube video platform team has introduced a new application called YouTube Create, which allows you to edit videos directly on your phone.
The new app aims to encourage more people to create YouTube Shorts, a TikTok-style video offered by YouTube. It’s generally easier to make a TikTok video than a full YouTube video. The creation of a separate app also follows TikTok’s strategy of releasing a separate (and popular) app called CapCut, which helps create videos for TikTok and other platforms.
The app offers tools such as precision editing and trimming, automatic subtitles, voiceover capabilities, and access to a library of filters, effects, transitions, and royalty-free music.
The YouTube Create app will soon be available as a free beta download for Android in countries including the US, Germany, France, UK, Indonesia, India, Korea and Singapore. An iOS version is planned for release next year.
Phones
Xiaomi has a holiday: more than 338 million Redmi Note smartphones have already been sold worldwide
At the last press conference dedicated to the announcement of the Redmi Note 13 series, Xiaomi and Redmi President Lu Weibing announced another achievement of the hit Redmi Note line.
According to the top manager, international sales of Redmi Note smartphones have already exceeded 338 million. The company announced that it had surpassed the 320 million mark in March 2023.
Chinese users will be able to start placing orders for the latest Redmi Note 13 Pro+, Redmi Note 13 Pro and Redmi Note 13 today, September 21. Note that the series brings many innovations. For example, Redmi Note 13 Pro+, for the first time for the Redmi Note model, received IP68 water protection.
It’s official: Windows 11’s next big update is arriving. With Copilot chatbot, RAR support and more
Microsoft has announced the release date for the next major feature update to the Windows 11 operating system. The version...
YouTube developers have released a TikTok-style video editor for smartphones
The YouTube video platform team has introduced a new application called YouTube Create, which allows you to edit videos directly...
Xiaomi has a holiday: more than 338 million Redmi Note smartphones have already been sold worldwide
At the last press conference dedicated to the announcement of the Redmi Note 13 series, Xiaomi and Redmi President Lu...
iPhone 15 Pro Max “destroyed” Samsung Galaxy S23 Ultra in camera test: clear examples
As new comparisons between the iPhone 15 Pro Max and the flagship Samsung Galaxy S23 Ultra emerge, it becomes clear...
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