In a large number of biological and environmental applications, ultrasound (US)-powered microand nanomotors have attracted considerable attention. However, their applications in biological settings have been limited due to the incompatibility of metallic motors and the lack of precision guiding. Here, we demonstrate that cellulosic polymer nanobubbles (200-800nm) can be propelled, aligned, acce...

We provide a model for the remarkable stability of surface nanobubbles to bulk dissolution. The key to the solution is that the gas in a nanobubble is of Knudsen type. This leads to the generation of a bulk liquid flow which effectively forces the diffusive gas to remain local. Our model predicts the presence of a vertical water jet immediately above a nanobubble, with an estimated speed of ∼3....

Nanobubbles with ultrathin single crystal shells, a new kind of closed nanostructure, have been synthesized from a nonlayered indium oxide semiconductor.

The dynamic equilibrium model suggests that surface nanobubbles can be stable due to an influx of gas in the vicinity of the bubble contact line, driven by substrate hydrophobicity, that balances the outflux of gas from the bubble apex. Here, we develop an alternate formulation of this mechanism that predicts rich behavior in agreement with recent experimental measurements. Namely, we find that...

The existence of stable nanoscopic gaseous domains in liquids, or nanobubbles, has attracted both skepticism and intrigue since classical theory predicts that spherical gas bubbles cannot achieve equilibrium. Can we prove these exist, if they do, how do survive? We critically review contemporary theoretical perspectives the stability surface bulk nanobubbles explain experiments either vindicate...

Bulk nanobubbles which are usually observed in pure water have a mean diameter typically around 100 nm. We use combination of physical and chemical techniques to prove the hypothesis that nanoentities stable clusters much smaller nanobubbles. The stability bulk nanobubble is affected by factors such as ionic strength or internal energy system. show on order nm exist cluster form neutral basic m...