Junhan Zhou

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SkinTrack is a wearable system that enables continuous touch tracking on the skin. It consists of a ring, which emits a continuous high frequency AC signal, and a sensing wristband with multiple electrodes. Due to the phase delay inherent in a high-frequency AC signal propagating through the body, a phase difference can be observed between pairs of(More)
Existing smartwatches rely on touchscreens for display and input, which inevitably leads to finger occlusion and confines interactivity to a small area. In this work, we introduce AuraSense, which enables rich, around-device, smartwatch interactions using electric field sensing as an adapted device. To explore how this sensing approach could enhance(More)
The gelation behavior of cationic surfactants with different counterions, Br(-) , [FeCl3 Br](-) , and [CeCl3 Br](-) , in imidazolium ionic liquids (ILs) and protic ethylammonium nitrate was investigated. Small-angle X-ray scattering measurements and freeze-fracture transmission electron microscopy observations revealed the lamellar phases of(More)
Green and environmentally friendly ionogels formed by a sugar surfactant were prepared in two kinds of imidazolium-based ionic liquids. The phase transition from ribbon structures to lamellar structures induced by temperature and the transition mechanism were investigated in detail by means of freeze-fracture TEM and field-emission SEM observations, as well(More)
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