材料科学英语Unit 6 Lecture 4 Critical thinking.pptx

Unit6BiomimeticsandMaterials1TextAIntelligentclothingTextBWhatlessonscanwelearnfromnature?

Objectives:1.Gettoknowandtrytounderstandthelinksbetweenthetwothingsineachofthefollowinggroupsfromabiomimeticperspective:themechanismofhumidityresponseofpineconesandsmartclothing;sharksandsmartswimsuits;thelotuseffectandgarmentswithnanofibers.2.Refreshyourmindonothermechanismsinnaturetohelphumanswithnewinventions.Lecture4Criticalthinking

Lecture3CriticalthinkingDiscussiontask1:Whatarethefunctionsofclothing?3

First,clothingcankeepthehumanbodywarmormakeusfeelmorecomfortableandprotectusfromphysicalharm.Second,somepeoplewearcertaingarmentstoshowtheirowntastesandstyles.Third,somepeopledressthemselvestobefashionableortoshowtheirownunderstandingsoffashion.Fourth,Somespecialclothingcanhelpusworkmoreefficiently.Forexample,aspeciallydesignedswimsuitcanhelpswimmersswimfastincompetitions.Fifth,clothescanmarkouridentities.Forexample,policemenwearpoliceuniforms;aPunkmaydresshimselforherselfinPunkclothes.

Lecture3CriticalthinkingDiscussiontask2:Sharewiththeclassthemechanismofhumidityresponseofpineconesandthemechanismofhumidityresponseofsmartclothingwhichadaptstochangingtemperatures.5

Themechanismofbendingofpinecones:Astheconesdriedout,theinsideofthescaleexpandsmorethantheoutside,causingthescaletobendoutwardsreleasingtheseedheldinside.Smartclothing:Whentheweareroftheclothinggetshotandsweats,thetinyspikesinthematerialwillreacttothemoistureandautomaticallyopenup.Thematerialthatisnotporousinlowerlayercanneverletwatergetthroughfromtheoutside.

Lecture3CriticalthinkingDiscussiontask3:Whatinspirationdoyouthinkscientistscangetfromsharksforasmartswimsuit?7

Basedontheinsightthats