75 citations
4 papers
Simple graphene chemiresistors as pH sensors: fabrication and characterization
Nan Lei, Pengfei Li, Wei Xue +1
We report the fabrication and characterization of a simple gate-free graphene device as a pH sensor. The graphene sheets are made by mechanical exfoliation. Platinum contact electr…
Liquid marbles as thermally robust droplets: coating-assisted Leidenfrost-like effect
Cedric Aberle, Mark Lewis, Gan Yu +2
The Leidenfrost effect-prolonged evaporation of droplets on a superheated surface-happens only when the surface temperature is above a certain transitional value. Here, we show tha…
Freezing of a Liquid Marble
Ali Hashmi, Adam Strauss, Jie Xu
In this study, we present for the first time the observations of a freezing liquid marble. In the experiment, liquid marbles are gently placed on the cold side of a Thermo-Electric…
Acoustophoresis in Variously Shaped Liquid Droplets
Gan Yu, Xiaolin Chen, Jie Xu
The ability to precisely trap, transport and manipulate micrometer-sized objects, including biological cells, DNA-coated microspheres and microorganisms, is very important in life…