Dewetting temperatures of prefrozen and grafted layers in solid ultrathin films viewed as melt-memory effects

Dewetting temperatures of prefrozen and grafted layers in solid ultrathin films viewed as melt-memory effects

Undercooled phase exists behind glass phase with superheated medium-range order between Tg and Tn+ > Tm. The ordered volume fraction stays equal to the percolation threshold F ≅ 0.15 of broken bonds up to Tn+. The difference ΔTg between Tg(bulk) of films with thickness (h > h0) and Tg(h) of ul...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2021-06, Vol.611, p.412796, Article 412796
Hauptverfasser: Tournier, Robert F., Ojovan, Michael I.
Format: Artikel
Sprache:eng
Schlagworte:
Annealing
Chemical Sciences
Crystallization
Drying
Film thickness
Glass phase
Grafted polymers
Grafting
Isothermal annealing
Linear functions
Melt temperature
Melt-memory
Melting
Percolation
Percolation threshold
Physics
Prefreezing
Substrates
Superheating
Thin films
Undercooling
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Zusammenfassung:Undercooled phase exists behind glass phase with superheated medium-range order between Tg and Tn+ > Tm. The ordered volume fraction stays equal to the percolation threshold F ≅ 0.15 of broken bonds up to Tn+. The difference ΔTg between Tg(bulk) of films with thickness (h > h0) and Tg(h) of ultrathin films of thickness (h 
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2020.412796