Ma­te­rial anom­aly

Down to Earth - - SCIENCE -

MOST MA­TE­RI­ALS ex­pand when they warm and shrink when they cool. Now re­searchers have found a ma­te­rial that has neg­a­tive ther­mal ex­pan­sion. Not only does scan­dium tri­flu­o­ride dras­ti­cally shrink as it warms over a huge range of tem­per­a­tures, it also main­tains the same, stable cu­bic crys­tal struc­ture over an even larger tem­per­a­ture range. The find­ing will lead to a bet­ter un­der­stand­ing of why ma­te­ri­als change vol­ume with tem­per­a­ture at all, with po­ten­tial ap­pli­ca­tions such as more durable elec­tron­ics. Phys­i­cal Re­view B, Oc­to­ber 1

Newspapers in English

Newspapers from India

© PressReader. All rights reserved.