Transmission Electron Microscopy (TEM)
Particle samples for TEM were prepared by washing the particles, concentrating
by centrifugation, and resuspending in high-purity water. A 5 μL aliquot was
placed on a formvar-coated copper grid and allowed to dry overnight. Samples
were imaged on a Philips Techni G2 electron microscope at 100 kV.