Publications by authors named "Yash Tibrewala"
Aqueous droplets acquire charge when they contact electrodes in high-voltage electric fields. Although many researchers have investigated droplet charging under various conditions, the droplet charges are typically reported simply in terms of a mean and standard deviation. Here, we show that droplets often acquire significantly less charge for a single contact compared to the previous and subsequent contacts.
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- Aqueous droplets gain charge when they touch electrodes in high voltage fields, but the charge transfer mechanism is not clearly understood.
- Recent findings indicate that the electrodes develop crater-like pits due to localized melting caused by dielectric breakdown arcs occurring as droplets approach.
- The study shows that while droplet conductivity affects the size of the pits created, it does not influence the total charge transferred, suggesting that energy from the dielectric breakdown is the main factor behind the pitting rather than the overall energy from the charge transfer process.
Article Synopsis
- The study investigates how aqueous droplets gain charge when they touch an electrode, which is important for manipulating droplet movement and merging in various applications.
- Researchers found that droplets tend to acquire more positive charge than negative charge, a phenomenon that hasn't been fully understood.
- The authors propose a new method to measure droplet charge through direct electric current measurement, showing that their results align closely with traditional force balance methods while also revealing that deionized water droplets acquire 69% more positive charge.