Coplanar miniaturization

Laser Fluorescence Detector. A helium-cadmium laser (Model 4240B, Llconlx, Sunnyvale, CA) was (diosen as the excitation source because of Its stability and convenient wavelengths (325 and 442 nm). The UV laser radiation (325 nm, 5-10 mH cw) was Isolated with a dielectric mirror and was focused on the miniaturized flowcell with a quartz lens. Sample fluorescence, collected perpendicular to and coplanar with the excitation beam, was spectrally Isolated by appropriate Interference filters and then focused on a photomultiplier tube (Centronlc Model Q 4249 B, Bailey Instruments Co., Inc., Saddle Brook, NJ). The resulting photocurrent was amplified with a plcoammeter (Model 480, Kelthley Instruments,... 

Based on equivalent circuit models of the cell component resistances [66], maximum ceU performance of SC-SOFCs with coplanar electrodes is predicted for very small electrode widths (6-10 pm) and gap sizes (2-12 pm). Performance comparisons of macro-, miUi-, and microcells [71] revealed a 10 times higher power density for the micro SC-SOFC which had smaller inter-electrode gaps and electrode widths. As closely spaced small-scale electrodes lower the ohmic resistance and the inter-digitated electrode pattern maximizes the electrode surface area, miniaturization of SC-SOFCs with coplanar, interdigitated electrodes is expected to yield suitable cell performance for small- and microscale power applications. The fabrication of microcells (Figure 2.3) presents many challenges and requires the manufacturing of coplanar microscale electrode patterns from multicomponent ceramic materials. 

Miniaturization limits for single-chamber micro solid oxide fuel cells with coplanar electrodes. J. Power Sources, 194 (2), 941-949. 

Chen et al. demonstrated a miniaturized coplanar capacitive sensor which can be integrated with microfluidic platform for detection of droplet position, size, and composition [4]. The inter-digitated, variable width design increases the capacitive signal for liquid structures with... 

---