Electric charges are conserved. The same would be expected to hold for magnetic charges, yet magnetic monopoles have never been observed. It is therefore surprising that the laws of nonequilibrium thermodynamics, combined with Maxwell's equations, suggest that colloidal particles heated or cooled in certain polar or paramagnetic solvents may behave as if they carry an electric/magnetic charge. ...

Articles you may be interested in Adhesive-free colloidal probes for nanoscale force measurements: Production and characterization Rev. Improved in situ spring constant calibration for colloidal probe atomic force microscopy Rev. Accurate noncontact calibration of colloidal probe sensitivities in atomic force microscopy Rev. A calibration method for lateral forces for use with colloidal probe f...

The uptake of colloid-bound Cd, Cr, and Zn by marine plankton (including the diatom Thalassiosira pseudonana, the dinoflagellate Prorocentrum minimum, and the copepod Paracalanus aculeatus) was studied using the radiotracer technique. Natural organic colloids (operationally defined as particles between 1 kDa and 0.2 μm) were isolated from Hong Kong coastal seawater using cross-flow ultrafiltrat...

Colloidal particles in runoff may have an important role in P transfer from soils to waterbodies, but remain poorly understood. We investigated colloidal molybdate-reactive phosphorus (MRP) in surface runoff and water extracts of calcareous arable soils from the semiarid western United States. Colloidal MRP was determined by ultrafiltration and operationally defined as MRP associated with parti...

Asphalt is considered a colloidal material and it is important to study the relationship between its colloidal structure, chemical components and performance. The aromatic nucleus content of asphalt at different depth analysed by attenuated total reflection (ATR) was taken as the index of colloid structure. The gray correlation was used to analyse the relationship between colloidal structure an...