Interfacial thermodynamics of spherical nanodroplets: molecular understanding of surface tension via a hydrogen bond network

Change of surface tension of nanodroplet originates dominantly from the configurational energy of interfacial molecules, which is evidenced by the increasingly disrupted hydrogen bond network as the droplet size decreases.

Interfacial characterization with wettability, microstructure and interfacial thermodynamics for Ti–Al/VN system

Interfacial characterization, which includes wettability, interfacial microstructure and interfacial thermodynamics between VN substrate and Ti–Al molten alloy with different Al concentrations, was studied by the sessile drop method at 1758 K. The wettability between molten Ti–Al alloy and VN depends on alloy composition. The initial apparent contact angle increases from 95 to 120° with increasing Al content from 40 to 80 wt.% in the Ti–Al alloys. The Ti–Al/VN system is a typical dissolution system. The effect of dissolution on the apparent contact angle is reflected in the initial stage and progresses synchronously with movement of the triple-phase line. The wettability of Ti–Al/VN system shows no remarkable improvement with the dissolution of V. AlN and TiN should be formed as the interfacial reaction products during dissolution reaction of VN substrate.

Unique interfacial thermodynamics of few-layer 2D MoS2 for (photo)electrochemical catalysis

In situ and operando spectroelectrochemistry are used to study the interfacial thermodynamics of few-layer MoS2 for (photo)electrocatalysis.