Stop Flow Lithography Synthesis and Characterization of Structured Microparticles

Table 2

BET surface area of single via SiO₂ and Al₂O₃ particles of different cross sections and multi-via cubic SiO₂ particles.

(a) SiO₂

Particle Cross Section Shape	Specific Surface Area; (m^2/g)	Pore Volume; (cm^3/g)	Pore Size; (nm)
Square	56 and 114^∗	0.09 and 0.15^∗	1.9 and 2.1^∗
Pentagonal	69	0.08	1.2
Circular	64	0.08	2.8
Range of particle dimension (µm)	40–47

(b) Al₂O₃

Particle Cross Section Shape	Specific Surface Area; (m^2/g)	Pore Volume; (cm^3/g)	Pore Size; (nm)
Square	73	0.45	3.5
Circular	81	0.73	2.9
Range of particle dimension (µm)	75–90

4 via particle.