Electronics For You - - TECHNOLOGI -

Ro­bot that can walk and jump on wa­ter

Chi­nese re­searchers have de­vel­oped a mi­crobot that can re­peat­edly jump across the sur­face of wa­ter with­out tank­ing. The re­searchers team from School of Chem­i­cal Engi­neer­ing and Tech­nol­ogy was led by Prof. Qin­min Pan. They used a por­ous, highly re­pel­lent nickel foam coat­ing so that the even charg­ers. Sci­en­tists have now FUHaWHG a flHxLEOH EaWWHUy WKaW FaQ EH folded, bent and dis­torted in a host of dif­fer­ent ways. These bat­ter­ies prom­ise thin­ner and lighter smart­phones, tablets and e-book read­ers that could be flHxLEOH aQG KROG PRUH FaSaFLWy. YRu could roll up these de­vices for easy stor­age in your pocket.

A team of re­searchers at the Korean Ad­vanced In­sti­tute of Sci­ence and Tech­nol­ogy (KAIST) is be­hind the QHZ flHxLEOH VROLGVWaWH EaWWHUy. TKLV recharge­able lithium-ion bat­tery (LIB) re­tains its en­ergy level even when folded, spin­dled or mildly mu­ti­lated. ,W LV aFWuaOOy SULQWHG RQ a WKLQ fiOP. Ap­ply­ing bat­tery ma­te­rial to rol­lable dis­plays has been a ma­jor cause for con­cern for gad­get man­u­fac­tur­ers thus far. This break­through is likely to change the way we think about sur­faces and screens.

The re­search team is cur­rently in­ves­ti­gat­ing a laser lift-off tech­nol­ogy to fa­cil­i­tate the mass pro­duc­tion RI flHxLEOH EaWWHULHV aQG 3D VWaFNLQJ struc­tures to en­hance charge den­sity of bat­ter­ies.

Mi­crochips to re­place hu­mans in drug test­ing

There have been de­bates about test­ing drugs on an­i­mals or any other liv­ing crea­ture. Well, here comes a so­lu­tion that will put the prob­lem to an end. Sci­en­tists from ear­vard Univer­sity aQG DHIHQVH AG­vaQFHG 5HVHaUFK PURMHFWV AJHQFy (DA5PA) RI USA KavH de­vel­oped a mi­crochip that can now be used for such tests. This mi­crochip is a small translu­cent de­vice, which can be used as a hu­man or­gan for test­ing drugs.

Ac­cord­ing to re­ports, this sin­gle de­vice can bring to­gether ten or­ganchips in or­der to en­able study of the ef­fect of a par­tic­u­lar drug on the whole body. Ev­ery or­gan on this mi­crochip LV PaGH uVLQJ FOHaU flHxLEOH SROyPHU. ,W aOVR FRQVLVWV RI KROORZ PLFURfluLG chan­nels that are lined by liv­ing hu­man cells. It is these hu­man cells that al­low sci­en­tists to study the im­pact of any drug on hu­man or­gans. Since the de­vice is translu­cent, it al­lows re­searchers to eas­ily view the re­sponse of the or­gans to a drug.

ear­vard Univer­sity has suc­cess­fully de­signed mi­crochips that mimic lung, heart and in­tes­tine.

Dig­i­tal iris that fools bio­met­ric scan­ners

At the re­cently held Black eat Se­cu­rity Con­fer­ence by aca­demics in Spain and the US, a new tech­nique of recre­at­ing iris im­ages us­ing the dig­i­tal codes that are stored in data­bases and used by iris- recog­ni­tion sys­tems to iden­tify peo­ple was shown. In­ter­est­ingly, the replica im­ages could even trick the com­mer­cially graded iris-recog­ni­tion sys­tems.

“The idea is to gen­er­ate the iris im­age, and once you have the im­age you can ac­tu­ally print it and show it to the recog­ni­tion sys­tem, and it will say ‘okay, this is the (right) guy,’” says Javier Gal­bally, who con­ducted the re­search with col­leagues at the Bio­met­ric Recog­ni­tion Group-ATVS, at the Univer­si­dad Au­tonoma de Madrid, and re­searchers at West Vir­ginia Univer­sity.

Ear­lier, re­searchers could cre­ate wholly syn­thetic iris im­ages with the char­ac­ter­is­tics of real iris im­ages. Though the im­ages fooled iris-recog­ni­tion sys­tems into think­ing they were real irises, they were not quite use­ful in im­per­son­at­ing a real per­son.

“BuW WKLV LV WKH fiUVW WLPH aQyRQH has es­sen­tially re­verse- en­gi­neered iris codes to cre­ate iris im­ages that closely match the eye im­ages of real sub­jects, cre­at­ing the pos­si­bil­ity of steal­ing some­one’s iden­tity through their iris,” men­tions a re­port by Threat Level.

Bio-in­spired mi­cro­robot (Im­age cour­tesy: http:// sci­en­tificearth­con­sci­en­tious6.files.word­press.com)

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