Chikwata chevaongorori vanobva kumayunivhesiti ekuScotland, Portugal neGermany chakagadzira sensor inogona kubatsira kuona kuvapo kwemishonga yekuuraya zvipembenene muhuwandu hushoma mumvura.
Basa ravo, rakatsanangurwa mupepa idzva rakabudiswa nhasi mumagazini yePolymer Materials and Engineering, rinogona kuita kuti kuongorora mvura kukurumidze, kuve nyore, uye kwakachipa.
Mishonga yekuuraya zvipembenene inoshandiswa zvakanyanya mukurima pasi rese kudzivirira kurasikirwa nezvirimwa. Zvisinei, kungwarira kunofanira kuitwa, sezvo kunyangwe kudonhedza mvura kudiki muvhu, pasi pevhu kana mumvura yegungwa kunogona kukanganisa hutano hwevanhu, mhuka uye nharaunda.
Kugara uchitarisa nharaunda kwakakosha kuderedza kusvibiswa kwemvura kuitira kuti paitwe matanho ekukurumidzira kana mishonga yekuuraya zvipembenene yaonekwa mumvura. Parizvino, kuongororwa kwemishonga yekuuraya zvipembenene kunowanzoitwa murabhoritari uchishandisa nzira dzakadai sechromatography uye mass spectrometry.
Kunyange zvazvo bvunzo idzi dzichipa mhedzisiro yakavimbika uye yakarurama, dzinogona kutora nguva uye dzinodhura kuzviita. Imwe nzira inovimbisa ndeyekushandisa makemikari senzira yekuongorora inonzi surface-enhanced Raman Scattering (SERS).
Kana chiedza charova molekyuru, chinopararira nemafrequencies akasiyana zvichienderana nechimiro chemamorekyuru chemorekyuru. SERS inobvumira masayendisiti kuona nekuona huwandu hwemamorekyuru akasara mumuenzaniso wekuyedza wakanyudzwa pamusoro pesimbi nekuongorora "minwe" yakasiyana yechiedza chakapararira nemamorekyuru.
Izvi zvinogona kuwedzerwa nekushandura pamusoro pesimbi kuitira kuti ikwanise kunyudza mamorekuru, nokudaro zvichivandudza kugona kwesensa kuona huwandu hwakaderera hwemamorekuru mumuenzaniso.
Chikwata chevaongorori chakaronga kugadzira nzira itsva yekuyedza inotakurika inogona kunyudza mamorekuru mumvura vachishandisa zvinhu zvakadhindwa zve3D zviripo uye kupa mhedzisiro chaiyo yekutanga mumunda.
Kuti vaite izvi, vakadzidza mhando dzakasiyana-siyana dzemaumbirwo emasero akagadzirwa nemusanganiswa wepolypropylene nemachubhu ecarbon ane madziro akawanda. Zvivako izvi zvakagadzirwa vachishandisa filaments dzakanyungudutswa, rudzi rwakajairika rwekudhinda kwe3D.
Uchishandisa nzira dzechinyakare dzemakemikari emvura, zvidimbu zvidiki zvesirivha negoridhe zvinoiswa pamusoro pechimiro chesero kuti zvigone kuita kuti Raman ipararire pamusoro.
Vakaedza kugona kwezvikamu zvakasiyana-siyana zvemasero akadhindwa e3D kupinza nekukweva mamorekuru e organic dye methylene blue, ndokuzoaongorora vachishandisa portable Raman spectrometer.
Zvinhu zvakashanda zvakanaka mumiedzo yekutanga - magadzirirwo elattice (periodic cellular structures) akabatana nesilver nanoparticles - zvakazowedzerwa ku test strip. Mishonga yekuuraya zvipembenene chaiyo (Siram neparaquat) yakawedzerwa mumvura yegungwa nesampuli dzemvura yakachena ndokuiswa pa test strips kuti iongororwe neSERS.
Mvura iyi inotorwa kubva pamuromo werwizi muAveiro, Portugal, uye kubva pamapombi ari munzvimbo imwe chete, ayo anoongororwa nguva dzose kuti anyatsoongorora kusvibiswa kwemvura.
Vaongorori vakaona kuti mitsetse iyi yakakwanisa kuona mamorekuru maviri emishonga inouraya zvipembenene muhuwandu hwakaderera se1 micromole, inova yakaenzana nemorekuru imwe chete yemishonga inouraya zvipembenene pamamiriyoni emamorekuru emvura.
Purofesa Shanmugam Kumar, wekuJames Watt School of Engineering paYunivhesiti yeGlasgow, mumwe wevanyori vepepa iri. Basa iri rinovakirwa pakutsvaga kwake mukushandiswa kwetekinoroji yekudhinda ye3D kugadzira machira ekuvaka ane mainjiniya ane hunhu hwakasiyana.
"Mhedzisiro yeongororo iyi yekutanga inokurudzira zvikuru uye inoratidza kuti zvinhu izvi zvakachipa zvinogona kushandiswa kugadzira masensa eSERS ekuona mishonga yezvipembenene, kunyangwe paine huwandu hwakaderera kwazvo."
Dr. Sara Fateixa vanobva kuCICECO Aveiro Materials Institute paYunivhesiti yeAveiro, mumwe wevanyori vepepa iri, vakagadzira plasma nanoparticles dzinotsigira tekinoroji yeSERS. Kunyange zvazvo bepa iri richiongorora kugona kwesystem iyi kuona mhando dzakasiyana dzezvinosvibisa mvura, tekinoroji iyi inogona kushandiswa zviri nyore kutarisa kuvapo kwezvinosvibisa mvura.
Nguva yekutumira: Ndira-24-2024