Abstract
We investigated the in situ phase transition of the nanoscopic patterns on block copolymer thin films during nanoindentation by using a transmission electron microscope (TEM) with a specially designed nanoindenter. For the first time, we observed directly an in situ phase transition from lamellar microdomains to disordered states during the nanoindentation on a baroplastic polystyrene-block-poly(n-pentyl methacrylate) copolymer (PS-b-PnPMA) film. Through the in situ TEM observation, the mechanism of the nanoscopic pattern formation on a block copolymer thin film by indentation is fully understood.
Original language | English (US) |
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Pages (from-to) | 4351-4354 |
Number of pages | 4 |
Journal | Nanoscale |
Volume | 5 |
Issue number | 10 |
DOIs | |
State | Published - May 21 2013 |