3D Printed Nanomagnets nthuav tawm Lub Ntiaj Teb Ntawm Cov Qauv hauv Cov Teb Sib Nqus

Raws li kev tshawb fawb luam tawm hauv" Xwm Nanotechnology" Hnub tim 21, ib pab neeg thoob ntiaj teb coj los ntawm Cavendish Laboratory ntawm University of Cambridge hauv tebchaws United Kingdom tau siv 3D tshuab luam ntawv qib siab los tsim cov hlau nplaum ob npaug, ib yam li ob lub helix ntawm DNA. Lawv twist ib leeg, combining curvature, chirality thiab muaj zog magnetic teb kev sib cuam tshuam ntawm cov spirals. Cov kws tshawb fawb tau tshawb pom li no tias cov hlau nplaum ob lub helixes tsim nano-scale topological textures nyob rau hauv ib qho chaw sib nqus, uas tsis tau pom dua ua ntej, qhib qhov rooj rau kev txhim kho cov khoom siv hlau nplaum txuas ntxiv mus.

Cov khoom siv hlau nplaum cuam tshuam rau txhua yam hauv zej zog, suav nrog kev tsim hluav taws xob, khaws cov ntaub ntawv, thiab kev suav. Tab sis cov khoom siv sib nqus sib nqus tau nrawm nrawm mus txog lawv qhov kev txwv qis hauv ob sab. Rau tiam tom ntej ntawm kev suav, tib neeg tau them nyiaj ntau dua thiab ntau dua rau kev tig mus rau peb-seem, vim tias tsis yog tsuas yog tuaj yeem ua tiav qhov ceev dua los ntawm 3D nanowire architecture, tab sis kuj yog peb-dimensional geometry tuaj yeem hloov cov hlau nplaum thiab muab cov haujlwm tshiab. .

Track nco yog ib qho cuab yeej tsis paub tab. Nws lub hauv paus ntsiab lus yog khaws cov ntaub ntawv digital hauv cov phab ntsa sib nqus ntawm nanowires los tsim cov ntaub ntawv khaws cia nrog kev ntseeg siab dua, kev ua haujlwm thiab muaj peev xwm. Tab sis txog tam sim no, lub tswv yim no tau nyuaj rau kev paub.

Ob peb xyoos dhau los, cov kws tshawb fawb tau tsom mus rau kev tsim cov txheej txheem tshiab rau kev pom cov qauv sib nqus peb sab thiab kuj tau tsim 3D tshuab luam ntawv rau cov khoom sib nqus. Kev ntsuas 3D yog ua los ntawm PolLux beamline ntawm Swiss lub teeb ci, uas tam sim no tsuas yog beamline muaj peev xwm muab cov duab xoo hluav taws xob muag muag. Siv cov thev naus laus zis thev naus laus zis thev naus laus zis thev naus laus zis, cov kws tshawb fawb tau pom tias 3D DNA qauv ua rau muaj qhov sib txawv ntawm cov hlau nplaum sib nqus piv rau 2D. Cov phab ntsa ua ke ntawm cov hlau nplaum sib nqus (cov cheeb tsam uas cov hlau nplaum tag nrho cov taw tes rau tib qho kev taw qhia) nyob rau hauv cov spirals uas nyob ib sab yog sib txuas heev thiab yog li deformed. Cov phab ntsa no nyiam ib leeg, thiab vim yog cov qauv 3D, lawv tig," xauv" rau hauv qhov chaw thiab tsim kev sib raug zoo thiab tsis tu ncua, zoo ib yam li cov khub hauv DNA.

Claire Donnelly ntawm Cavendish Laboratory hauv Cambridge tau hais tias:" Tsis tsuas yog peb tau pom tias cov qauv 3D ua rau muaj kev nthuav dav topological nanotextures hauv magnetization, tab sis peb kuj nrhiav tau tshiab nanoscale teb configurations nyob rau hauv stray magnetic teb. Yog tias peb tuaj yeem ncav cuag tus nanoscale Los ntawm kev tswj cov hlau nplaum no, peb tau los ze zog kom ua tiav qhov kev tswj hwm tib yam li hauv ob qhov ntev."

Cov kws tshawb fawb tau hais tias cov txiaj ntsig tau ntxim nyiam. Ob chav helix qauv zoo ib yam li DNA tsim muaj zog bonds ntawm lub helices, yog li deforming lawv cov duab, thiab lub vortex tsim nyob rau hauv ib tug sib nqus teb nyob ib ncig ntawm cov bonds - lub topological qauv yog zoo siab heev, thiab nws yuav muaj ntau yam kev siv prospects.