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What's a graphene display and why it's going to be in flexible smart devices from the future Yesterday, a Chinese manufacturer whose name escapes us turned a few heads by showing a working and completely flexible Android smartphone which uses a graphene screen. The invention is shaped like a bracelet and has no problems wrapping itself around a lady's hand, for example. This glimpse of the feature reminded us that leading smartphone makers already have flexible displays in mass production, but they still choose to incorporate them in devices that are absolutely flat and un-bendable. It also sparked our interest in the never seen in use before piece of technology that is the graphene display. What's graphene? Graphene is a layer of pure carbon. At just one atom thick, graphene is the thinnest, lightest, strongest, most transparent, and most heat and electricity-conductive material known to scientists. The ultimate super-material which, mixed with traditional metals and plastic, could shape the future of, quite literally, everything! As carbon is the chemical basis for all known life on Earth and found in abundance, graphene is envisioned by futurologists as an ecological, sustainable solution for a theoretically limitless number of applications. What's a graphene display? The first flexible graphene display (pictured) was prototyped in September 2014 by two partnering institutions – the University of Cambridge Graphene Center and UK firm Plastic Logic. It was a monochrome screen, similar to that of e-readers. The invention might seem limited, but it's an essential step towards the wearable and flexible smart devices the future has in store. This particular display, and possibly others that followed it – like the one on the Chinese smartphone we saw yesterday – works on the principle of active matrix electrophoretic. It uses an electric field to output images via re-arranging particles suspended in a solution. The layer of emulsion-processed graphene electrode is deposited onto a flexible plastic panel and etched with electric circuits. There's no intrinsic requirement for using glass sheets, which means graphene displays won't be subjected to the kind of impact damage sustained by glass-covered screens. Moreover, this sort of display should be easier to produce than flexible OLED screens, because its backplane – the electrical layer which supplies power for re-arranging display particles – can be produced using a low-temperature process (at below 100° C / 212° F), which minimizes yield risk and makes the production less resource-intensive. However, smartphone graphene displays will likely use elements from LCD and OLED technology to provide the kind of colors and refresh rates needed for an adequate user experience. This will inevitably complicate production somewhat. About five months later, researchers from the University of Manchester and University of Sheffield introduced a semi-transparent, graphene-based LED screen, which is the basis for the flexible graphene displays that will end up in future mobile devices. Being only 10 to 40 atoms thick, it emits light across its entire surface without the need for a backlight.
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Danas, kineski proizvođač čije ime nam izmiče pretvoren nekoliko glava prikazuje rad i potpuno fleksibilan Android smartphone koji koristi rešetku ekrana.Izum je u obliku narukvica i nema problema sama obilazi za žensku ruku, na primjer. Ovaj uvid u značajke podsjetio da vodećih smartphone odluka već su fleksibilni zasloni u masovnu proizvodnju, ali još uvijek žele da ih se u uređaje koji su potpuno ravne i UN bendable. To je također izazvalo naš interes u nikad vidjela u uporabi prije komad tehnologije koji je rešetku prikaza. Što je rešetku? Rešetku je sloj od čistog ugljika. U samo jedan atom debeli, rešetku je najtanji, najlakši, najjači, najtransparentniji i najviše topline i električne energije-vodljivi materijal poznat znanstvenicima. Krajnji super materijal koji pomiješan s tradicionalnim metala i plastike, mogu oblikovati budućnost, sasvim doslovno, sve! Kao ugljik je kemijska osnova za sav poznati život na zemlji i u izobilju, rešetku je predviđene futurologists kao ekološki, održivi rješenje za teoretski neograničen broj aplikacija. Što je rešetku prikazati?Prvi prikaz fleksibilnu rešetku (na slici) je bila još u zametku rujnu 2014 dvije partnerske institucije – Sveučilišta Cambridge rešetku centar i UK tvrtka Plastic Logic. To je crno-bijeli zaslon, slična onoj u e-čitatelja. Izum može činiti ograničen, ali je bitan korak prema nosive i fleksibilni pametni uređaji budućnosti ima u trgovini. Ovaj određeni zaslon, a možda i drugima koji su uslijedili-kao jedan kineski smartphone smo vidjeli jučer – radi na principu aktivnom elektroforetskoj slici. Ona koristi elektriËnog polja na izlazne slike putem re-dogovaranje čestice suspendirane u rješenje. Sloj obrađen emulzija rešetku elektroda je pohranjen na fleksibilne plastične ploče i Jetkani strujni krugovi. Postoji intrinzična zahtjev za korištenje staklene ploče, što znači da prikazuje rešetku neće biti podvrgnut vrsta utjecaja štetu pretrpio od stakla-pokrivena ekrana. Štoviše, ovakav prikaz bi trebao biti lakše proizvesti nego fleksibilni OLED ekrana, jer njegova backplane – električni sloj koji daje moć za nepravilnog prikaza čestice – može biti proizvedena postupkom niske temperature (na ispod 100 ° C/212 ° F), koja smanjuje prinos rizik i čini proizvodnja manje resursa-intenzivna. Međutim, prikazuje rešetku smartphone će se vjerojatno koristiti elemente iz LCD i OLED tehnologija za vrstu boje i osvježiti stope potrebna za odgovarajuće korisničko iskustvo. To će neizbježno komplicirati proizvodnje pomalo. Pet mjeseci kasnije, istraživači sa Sveučilišta u Manchesteru i Sveučilišta u Sheffieldu uvodi polu-proziran, a rešetku LED zaslon, što je temelj za fleksibilnu rešetku koja će završiti u budućnosti mobilnih uređaja. Da je samo 10 do 40 atoma debeli, emitira svjetlost preko cijele površine bez potrebe za pozadinsko osvjetljenje.