- published: 17 Mar 2017
- views: 205004
Quantum dots (QD) are semiconductor devices that tightly confine electrons or holes in all three spatial dimensions. They can be made via several possible routes including colloidal synthesis, plasma synthesis, or mechanical fabrication. The term “quantum dot” was coined by Mark Reed in 1988; however, they were first discovered in a glass matrix by Alexey Ekimov in 1981 and in colloidal solutions by Louis E. Brus in 1985. The electronic properties of the quantum dots fall between those of bulk semiconductors and those of discrete molecules of comparable size, and optoelectronic properties such as band gap, can be tuned as a function of particle size and shape for a given composition. For example, the photoluminescence of a QD can be manipulated to specific wavelengths by controlling particle diameter. Larger QDs (radius of 5-6 nm, for example) emit longer wavelengths resulting in emission colors such as orange or red. Smaller QDs (radius of 2-3 nm, for example) emit shorter wavelengths resulting in colors like blue and green, although the specific colors and sizes vary depending on the exact composition of the QD.
Samsung (Hangul: 삼성; hanja: 三星; Korean pronunciation: [sʰamsʰʌŋ]) is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. It comprises numerous subsidiaries and affiliated businesses, most of them united under the Samsung brand, and is the largest South Korean chaebol (business conglomerate).
Samsung was founded by Lee Byung-chul in 1938 as a trading company. Over the next three decades, the group diversified into areas including food processing, textiles, insurance, securities and retail. Samsung entered the electronics industry in the late 1960s and the construction and shipbuilding industries in the mid-1970s; these areas would drive its subsequent growth. Following Lee's death in 1987, Samsung was separated into four business groups – Samsung Group, Shinsegae Group, CJ Group and Hansol Group. Since 1990s, Samsung has increasingly globalized its activities and electronics, particularly mobile phones and semiconductors, have become its most important source of income.
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Samsung has launched their new 2017 QLED TV range. I joined them at the Louvre in Paris for the launch event and got hands-on with their incredible new Quantum Dot TVs: http://www.amazon.com/dp/B01NAYM6JQ/?tag=techchap-20 Thank you to Samsung for sponsoring this video. For more information on QLED TV, visit http://www.samsung.com/global/tv/ ~My Gear~ Camera: US: http://www.amazon.com/dp/B00L8YWT5G/?tag=techchap-20 UK: http://www.amazon.co.uk/dp/B0156X5MYO/?tag=techchap-21 Lens: US: http://www.amazon.com/dp/B00DBL0NLQ/?tag=techchap-20 UK: http://www.amazon.co.uk/dp/B00DBL0NLQ/?tag=techchap-21 Lens Adaptor: US: http://www.amazon.com/dp/B011GEMHU4/?tag=techchap-20 UK: http://www.amazon.co.uk/dp/B011GEMHU4/?tag=techchap-21 Mic: US: http://www.amazon.com/dp/B00YAZHRZM/?tag=techchap-20 UK: htt...
We compare two of the finest televisions that 2017 has to offer: the Samsung QLED and LG OLED. Samsung's brand new QLED line of TVs is a series coined by the company that means "quantum light emitting diode". The new branding is an attempt to distinguish this TV as Samsung's most premium television and has the capacity to produce an image that's brighter than an OLED TV. The QLED suffers from an acute viewing angle, that requires the viewer to be in the middle of the TV, and could pose a problem if there are multiple people watching it. With LG's OLED TV, the image is produced by starting with perfect black. With true blacks being produced, it's hard to beat the OLED in terms of picture quality. The color is spot on straight out of the box, and its motion is smoother than the QLED. ...
QLED vs OLED are the two big display technologies at CES 2017. Can Samsung's QLED panels match the LG, Sony and Panasonic's OLEDs? Ced Yuen gives us all the details. Read more: http://www.trustedreviews.com/opinions/what-is-qled-the-future-of-tv-tech-explained
The Samsung QLED TV gives you total freedom to create a beautiful living space. The Optical cable, with invisible connection, is hardly visible and transforms your space from messy to harmonious in minutes. Neatly leading to all of your connected devices, it sends a signal so you don't have to point to each device any more. The sleek No Gap Wall- Mount means you don't need that TV stand anymore - your QLED TV fits straight to your wall and looks right at home. Register at http://www.samsung.com/za/question-everything/. Learn more about colour http://bit.ly/2pWfMk0 Learn more about light http://bit.ly/2qSsLAB Learn more about smart http://bit.ly/2qSscYl
Hands-on review of the brand new 2017 Samsung Q7F QLED TV Check price on Amazon.com: http://amzn.to/2oFyp8Y Full review: http://www.rtings.com/tv/reviews/samsung/qled-q7f-q7 Model tested: 55" (QN55Q7F) Should also be valid for the 65" (QN65Q7F) and 75" (QN75Q7F) *We reposted the video because there was an error in the input lag measurements. --- Design (0:39) Inputs (0:55) Contrast (1:17) Local Dimming (1:27) Gray Uniformity (1:42) Motion Blur (1:50) Input Lag (2:03) Viewing Angle (2:18) Reflections (2:32) Peak Brightness (2:44) Color Volume (4:02) Smart Features & Remote (4:59) Conclusion (5:15)
Samsung unveiled its QLED TV at CES 2017 and it's a major improvement over last year's SUHD lineup. The viewing angle is improved, there are both curved and flat options, multiple stands are available, and the wall mounting design leaves nearly no gap between the TV and wall. SUBSCRIBE FOR THE LATEST VIDEOS http://bit.ly/DTYouTubeSub VISIT DIGITAL TRENDS http://www.digitaltrends.com/ CHECK OUT OUR LATEST PODCAST http://www.digitaltrends.com/podcasts/ FOLLOW US! https://www.facebook.com/digitaltrends https://twitter.com/digitaltrends https://www.instagram.com/digitaltrends https://plus.google.com/+digitaltrends/posts
If you're thinking about buying a new Samsung QLED, please do yourself a favor and watch this video!! You will be glad you did!! Be careful out there when buying a 4K TV! Buy my music! iTunes: http://bit.ly/CDSiTunes Download Free DJ Mixes: http://bit.ly/DJCDSMX2 Rtings QLED Review: http://www.rtings.com/tv/reviews/samsung/q7f Rtings QLED Review Video: https://www.youtube.com/watch?v=zp2WYhB_7dM Joelster G's Channel: https://www.youtube.com/channel/UCwNKv8AUiwqJ_zqBlJ2gxiw 4K TV Buying Guide: https://youtu.be/aawfvLlT3kM My home theater including: LG OLED65E6P: http://www.lg.com/us/tvs/lg-OLED65E6P-oled-4k-tv Denon AVR-X6300H: https://usa.denon.com/us/product/hometheater/receivers/avrx6300h Oppo UDP-203: https://www.oppodigital.com/blu-ray-udp-203/ Klipsch RP-280F: https://www.crutc...
SUSCRÍBETE y conoce todas las novedades en tecnología https://goo.gl/JTw19a ▶▶▶ Puedes comprar tu televisor Samsung QLEd aquí http://amzn.to/2rNWWxP 65 pulgadas son muchas pulgadas para el pequeño estudio del clipset lab. pero nos gustan los retos. además teníamos pendiente probar los nuevos televisores QLED de Samsung que quieren plantar cara a los OLED. De momento aquí va el unboxing Síguenos: Blog clipset http://clipset.20minutos.es/ Twitter http://www.twitter.com/clipset Facebook https://www.facebook.com/clipset YouTube http://www.youtube.com/user/clipsetvideo Instagram https://www.instagram.com/clipset/ Telegram: https://t.me/clipset Snapchat: clipsetsnap
REDES SOCIALES del CANAL WEB: http://www.unocero.com TWITTER: http://www.twitter.com/unocero FACEBOOK : http://www.facebook.com/unocerofan INSTAGRAM: http://www.instagram.com/unocerofan En esta ocasión probamos una de las nuevas QLED TV de Samsung, cuya característica principal es que cuentan con Quauntun Dots, pequeños nanocristales que generan millones de combinaciones de colores naturales para que podamos apreciar la imagen tal cual como si la estuviéramos viendo en la vida real. La diferencia sobresaliente de los nuevos televisores de QLED es que están diseñados y construidos bajo tres pilares: Q Picture, Q Style y Q Smart. El primero de estos hace referencia a la calidad de imagen y cantidad de colores que se muestra en las imágenes, donde adem...
See every moment of your favorite movies and shows, whatever the lighting conditions, thanks to QLED TVs HDR and Ultra Black technology. Exquisite HDR 1500 shows the detail of light and dark content and Ultra Black improves your viewing experience by reducing light reflections on your TV screen. Ready for some serious movie time? To learn more, visit http://spr.ly/60528k4nC
There's a game life plays
makes you think you're everything they ever said you were
Like to take some time
Clear away everything I planned
Was it life I betrayed
for the shape that I'm in
It's not hard to fail
it's not easy to win
did I drink too much
could I disappear
and there's nothing that's left but wasted years
There's nothing left but wasted years
If I could change my life
Be a simple kind of man try to do the best I can
if I could see the signs
I'd derail every path I could
now I'm about to die
won't you clear away from me
give me strength to fly away