Insediamento di Biden alla Casa Bianca: il presidente ha giurato

Oms: "Nonostante il vaccino, nel 2021 niente immuità"Sviluppato in Italia un innovativo vetro che si ripara da solo con l'acqua. 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background-color: #fff; border-radius: 0.5rem; box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12); font-family: sans-serif; content: 'Loading...'; display: flex !important; font-size: 13px; font-weight: bold; line-height: 1; justify-content: center; min-height: 50px; text-transform: uppercase;}#speakup-player:empty{ display: block;} Il vetro ha modellato la società umana come pochi altri materiali hanno saputo fare. Fin dalle sue umili origini, quando era composto da semplice sabbia, calcare e carbonato di sodio, ha affascinato per la sua capacità di essere trasformato in oggetti di lusso, spesso finemente lavorati. Tuttavia, l'essenza del vetro risiede non tanto nella sua composizione chimica quanto nello stato di materia che rappresenta, ossia una sostanza che, raffreddata, diventa rigida senza cristallizzarsi. Un team di ricercatori guidato da Finkelstein-Zuta et al ha ora annunciato, attraverso uno studio pubblicato sulle pagine di Nature, di aver sviluppato un nuovo e innovativo vetro che non possiede le sole proprietà ottiche che lo hanno reso indispensabile nella vita di tutti i giorni, ma anche delle capacità adesive e autoriparanti.La scoperta del vetro peptidico Il gruppo di ricerca, si legge su Nature ha scoperto che un semplice peptide può interagire in modo disordinato con l'acqua, formando un vetro autoriparante. Questa scoperta rappresenta una svolta significativa nel campo dei materiali sostenibili, offrendo potenziali alternative ai vetri convenzionali che spesso richiedono processi produttivi ad alta intensità energetica. Il vetro peptidico scoperto dai ricercatori di Finkelstein-Zuta et al mostra caratteristiche straordinarie. Non solo mantiene la trasparenza e la resistenza meccanica tipiche del vetro tradizionale, ma presenta anche una peculiarità unica: è in grado di ripararsi da solo. Questa proprietà, detta "autoriparazione", si attiva semplicemente aggiungendo acqua. Il peptide, infatti, riesce a riamalgamarsi e a ricostruire la sua struttura originaria, una caratteristica che potrebbe rivoluzionare numerose applicazioni pratiche.Implicazioni e applicazioniLa scoperta del vetro peptidico segna un passo avanti importante nella ricerca di materiali più sostenibili, in grado di ridurre l'impatto ambientale. Il fatto che questo vetro possa essere utilizzato anche come rivestimento adesivo amplifica ulteriormente le sue potenziali applicazioni. Immaginate superfici autoriparanti in edifici, schermi di dispositivi elettronici che si riparano da soli e nuovi materiali per l'industria automobilistica capaci di rigenerare le loro superfici danneggiate.Verso un futuro ancora più sostenibileQuesta scoperta apre nuovi orizzonti anche nell'ambito della chimica dei materiali. La possibilità di creare un vetro partendo da composti organici semplici, come i peptidi, potrebbe portare alla progettazione di nuovi materiali con proprietà personalizzabili, adatti per una vasta gamma di settori industriali e tecnologici. Con il continuo progresso della scienza dei materiali, le implicazioni di queste scoperte potrebbero estendersi ben oltre il vetro stesso, influenzando la maniera in cui concepiamo e utilizziamo i materiali nel futuro. Mentre il vetro peptidico rappresenta già una significativa innovazione, la ricerca continua a esplorare nuovi composti e processi che potrebbero ulteriormente ampliare le possibilità offerte da questi sorprendenti materiali.Conclusioni Lo studio condotto da Finkelstein-Zuta et al. è una testimonianza dell'ingegnosità intrinseca nella scienza dei materiali e della chimica. La possibilità di dar vita a un vetro autoriparante da un semplice peptide, attivabile con l'aggiunta di acqua, rappresenta non solo un traguardo scientifico ma anche un passo verso un futuro più sostenibile e tecnologicamente avanzato. La strada è aperta per ulteriori ricerche e innovazioni che potrebbero rivoluzionare la nostra interazione con i materiali nel quotidiano.Fonte:Nature TiscaliNews   13-06-2024 - 12:52 Link copiato Commenti Leggi la Netiquette

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