Source: riken.jp
D’fhéadfadh teicneolaíocht teasa a d’fhorbair foireann uile-RIKEN cealla gréine agus braiteoirí tadhaill a cheangal de réada a bhfuil a gcruth dúshlánach le lannú1 orthu.
Recent studies have indicated that curved solar-cell panels capture sunlight more efficiently than flat ones on cloudy days. One way to produce curved electronics is with rubber-like substrates, but solar cells on such substrates usually have much lower performance. In contrast, solar cells fabricated on flexible sheets have high efficiency, but can be difficult to attach to curved surfaces —a fact that anyone who has tried to gift wrap a soccer ball can attest to.
Thuig taighdeoirí faoi cheannas Takao Someya ó Lárionad RIKEN um Ábhair Éigeandála go bhféadfaí an fhadhb seo a shárú trí úsáid a bhaint as -scannáin chrapadh teasa, a úsáidtear go coitianta chun táirgí ar nós thar-an{{2} a chuimsiú. }cógais chuntair. Cé go bhfuil an chuid is mó de na leictreonaic ró-dhocht nó sobhriste le bheith ceangailte le scannán crapadh, speisialtóireacht an fhoireann i dtáirgeadh feistí ultrathin a bhfuil airíonna uathúla.
"When a material becomes thinner, it becomes more flexible—that's why we can crumple aluminum foil by hand, but can also use aluminum to make bicycles," explains postdoctoral researcher Steven Rich. "Although we use rigid materials such as metals and plastics, they are three times thinner than a grocery bag and can bend very sharply without breaking."
Cheangail triúr comhghleacaithe saibhre agus triúr comhghleacaithe RIKEN leathán polaiméire neamhsínte ach solúbtha le scannán crapadh, ansin d’úsáid siad micreascópacht chun an struchtúr cisealta a bhreathnú le linn nochtadh teasa éagsúla. Léirigh na tástálacha seo, de réir mar a tháinig laghdú suas le 70 faoin gcéad ar achar na feiste , gur mhaolaigh na leatháin ultrathin an brú comhbhrú trí roic agus fillteacha bídeacha a fhoirmiú.
By controlling the size of these wrinkles and choosing materials capable of surviving both heat and severe wrinkling, the RIKEN team found they could shrink prefabricated organic photovoltaic modules onto round objects (Fig. 1) as well as ones with sharp angles and irregular curvatures, including plastic rocks and traditional Japanese Daruma dolls.
Cé go raibh na taighdeoirí ag súil go bhféadfadh crapadh damáiste a dhéanamh do na comhpháirteanna fótavoltach agus feidhmíocht gléas a laghdú, tharla a mhalairt. Thug turgnaimh le fios gur fheabhsaigh airíonna fótónacha na struchtúir roic spreagtha an ionsú solais, rud a chuir dlús le héifeachtúlachtaí tiontaithe cumhachta suas le 17 faoin gcéad thar ghléasanna plánacha.
The team also used shrink wrapping to laminate the handle of a teacup with an electronic touch sensor—a delicate feat that serves as an example of how this technology could be widely applied. "We could incorporate sensors along with displays, power-generation systems, and transistors to create interactive interfaces," Rich says.
