Apple

IFixit plockar isär nya MacBook Pro

Något nytt slags material

iFix­it som alltid är snabba(st) och på att ploc­ka sön­der nya pro­duk­ter från oli­ka elek­tron­ik­til­lverkare har gett sig på årets Mac­Book Pro i sed­van­lig ord­ning.

De kon­stat­er­ar att det är den snab­baste Mac­Book Pron någon­sin, med en åtta kärnig proces­sor och ett nytt tan­gent­bord, igen.

Enligt iFix­it så innehåller tan­gent­bor­det ett nytt mate­r­i­al som de inte rik­tigt kan kom­ma fram till vad det består av.

  • So, what changed this year? First, the trans­par­ent switch cov­er mate­r­i­al.
  • The cov­er in the 2018 mod­el is semi-opaque, some­what tacky, and feels like sil­i­cone. The new mod­el is clear­er and smooth to the touch.

  • To con­firm that the mate­ri­als are indeed dif­fer­ent, we ana­lyzed them using Fouri­er Trans­form Infrared (FTIR) spec­troscopy. Thanks to Eric Beat­on and Cal Poly’s Mate­ri­als Engi­neer­ing depart­ment for their equip­ment and exper­tise!

  • FTIR analy­sis works by shin­ing infrared light at a mate­r­i­al and mea­sur­ing how much light is absorbed and at what wave­lengths. This data acts like a fin­ger­print that can be used to iden­ti­fy the mate­r­i­al.

  • The dif­fer­ing peaks and val­leys on the FTIR spec­tra for the two sam­ples show us that they are dif­fer­ent mate­ri­als. But what are they?

  • When com­par­ing these FTIR spec­tra to that of known poly­mers, the clos­est match for the 2018 mod­el is poly­acety­lene with aro­mat­ic ure­thane side groups, while the 2019 mod­el uses polyamide (com­mon­ly known as nylon).

  • What this does­n’t tell us is, just what prob­lem Apple’s engi­neers tried to solve using this updat­ed mate­r­i­al. Send us your ideas!

Läs mer om det hela på deras hem­si­da.

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