202 citations · 355 across the 13 of their papers we have counts for
5 papers · 1 filter
Rolling at right angles: magnetic anisotropy enables dual-anisotropic active matter
Eavan Fitzgerald, Cécile Clavaud, Debasish Das +2
We report on an experimental active matter system with motion restricted to four cardinal directions. Our particles are magnetite-doped colloidal spheres driven by the Quincke elec…
Using optical tweezers to simultaneously trap, charge and measure the charge of a microparticle in air
Andrea Stoellner, Isaac C. D. Lenton, Artem G. Volosniev +9
Optical tweezers are widely used as a highly sensitive tool to measure forces on micron-scale particles. One such application is the measurement of the electric charge of a particl…
Geometry of the vapor layer under a Leidenfrost hydrogel sphere
Vicente L. Diaz-Melian, Isaac C. D. Lenton, Jack Binysh +2
A floating Leidenfrost droplet exhibits curvature inversion of its underside, due to the balance of vapor pressure and surface tension. Using interferometric imaging, we find diffe…
A duality between surface charge and work function in scanning Kelvin probe microscopy
Isaac C. D. Lenton, Felix Pertl, Lubuna Shafeek +1
Scanning Kelvin probe microscopy (SKPM) is a powerful technique for macroscopic imaging of the electrostatic potential above a surface. Though most often used to image work-functio…
No time for surface charge: how bulk conductivity hides charge patterns from KPFM in contact-electrified surfaces
Felix Pertl, Isaac C. D. Lenton, Tobias Cramer +1
Kelvin probe force microscopy (KPFM) is a powerful tool for studying contact electrification, using an tiny tip to image voltages caused by transferred charge. It has been used in…