Phonon Coupling - Electrons in CdSe, CdS Cores, and Shell Quantum Dots
Xu Chenyuan's StudyEditor | Xu Chenyuan's StudyWe found that peak CdS frequency affects excitationStrong dependence on energyBetween the experimental frequency of the CdSe+CdS combination band and the sum of the corresponding fundamental frequencyThere is still a huge differenceThis indicates that the main transition at high excitation energy is limited to the CdSe core or CdS shell, and therefore cannot enhance the binding band transition between the core and shellThe Raman intensity ratio of CdS to CdSe further supports this viewpoint. The Phonon of CdSeLO in the Lowest Exciton TransitionElectron phonon coupling is slightly weaker in core/shell structures than in pure CdSe quantum dotsThis is contrary to the expectation of the Frehlich coupling mechanism...
Tech >>
Huawei P60 plummeted by 1069 yuan, with 512GB+IP68+Beidou satellite news, giving Xiaomi Gravity a blow
In a saturated market, if a company's performance improves, it also means that the performance of other companies will deteriorate. The mobile phone industry is currently in this state, so when the news of Xiaomi's new flagship Xiaomi 13 Ultra going public and selling hot, other friends quickly feel pressure, especially Huawei, because it has always been in the domestic high-end flagship field, Huawei mobile phones have absolute advantages, and other high-end flagship brands under domestic brands cannot compare with them...
Tech >>
[Areyoustillingitin2023?]
OnSeptember11,2019,at1:00AM(BeijingTime),AppleInc.unveiledtheiPhone11attheSteveJobsTheater...
Tech >>
Ranking of users of various mobile operating systems: iOS 1.7 billion>MIUI 600 million>Hongmeng 320 million
On May 24th, Xiaomi officially released its first quarter financial report for 2023. Data shows that in the first quarter of this year, Xiaomi's revenue was 59...
Tech >>
WeChat empty handed payment function is online! Are you still scanning the code on your phone?
Have you ever had the experience of forgetting to bring your phone or running out of battery when you go out, and wanting to make a payment but unable to do anything about it? Have you ever had such concerns about whether Facebook payments will leak your privacy or be stolen? Have you ever had the idea that it would be so convenient to make a payment with the palm of your hand!If you have any of the above situations, then I have a good news to tell you: WeChat empty handed payment function has officially been launched!What is the WeChat empty handed payment function? Simply put, it means that users can perform palm swiping operations on the face swiping device without the need to scan codes or swipe cards to complete payment.This feature is safer and more accurate than facial payment, as it reads the veins of the palm blood vessels rather than the epidermal veins...
Tech >>
Don't blindly switch to IT just because you have a high income, not everyone is suitable for it
IT is the fastest growing industry in recent years, and programmers are also the most sought after and popular profession. Even if many laymen are unsure of what front-end, back-end, engineer, architect, or Java, Web, C #, Python are all for, they have already made up their minds to switch to IT...
Tech >>
A three-year contract for servers, let's talk about building personal websites from scratch (super detailed)
Time flies like an arrow, and the sun and moon fly like a shuttle. I didn't expect the three-year contract to arrive so soonHahaha, I took the wrong set...
Tech >>
The first beautiful robot in China, with a humanoid appearance and lifelike features throughout the body
Guys! I am delighted to introduce to you today the first beautiful robot made in our country! This robot is so realistic that you might even think it's a real human!(The mini program has been added here, please go to Today's Headlines client to view it)Our robot team comes from the University of Science and Technology of China, and they spent a lot of time and effort to develop this female robot called Jiajia.Jiajia has a perfect appearance, thanks to her designers' research and development based on Chinese aesthetic standards...
Tech >>
China's first beautiful robot was born, customize a robot wife, are you willing to marry one?
China's first intelligent beauty robot is single and can provide private customization services. Would you like to live with an intelligent beauty robot?Decades ago, information was blocked and the development of intelligent devices was slow...
Tech >>
40 million units! Meng Wanzhou Officially Announces, Foreign Media: Huawei's Day Has Been Dawn
Jay Chou - Fireworks Easy to Cold_ 202319171455.mp34:22From the Science and Technology New Knowledge MuseumThis article is original, please do not plagiarize or move, violators will be held accountableIn the perception of many consumers and mobile phone manufacturers, smartphones are no longer sellable...
Tech >>
Lu Weibing announced the "new machine" with 1TB of large memory for only 3099 yuan, as well as 2K direct screen and wireless charging
Since Lu Weibing took over the Hongmi mobile phone business, Hongmi mobile phones have also been moving towards a more stable and high-end development path. At the same time, they also have an absolute "leading position" in the mid-range cost-effectiveness market...
Tech >>
360 Outdoor Ball Machine 6Pro Short Test
As a leader in the domestic security field, 360 has been deeply involved in various fronts of security products and leading the trend of various products. The surveillance market, which has a large market share, has always had pain points of strong professionalism, high costs, and high construction difficulty, making some small places with a strong demand for video surveillance very awkward...
Tech >>