An inherent weakness of waveguide based optofluidic trapping [1] is that only a small fraction of the total power is used in trapping and transporting particles. In the best case scenario, 25% power is lost in coupling into the waveguide, and of the remaining energy, only 10-15% is present in the evanescent field. Ultimately, only 7-12% of the input power is actually used for trapping. Here we ...

Several recent detector technologies developed for particle physics applications are based on microfabricated structures. Detectors built with this approach generally exhibit the overall best performance in terms of spatial and time resolution. Many properties of the SU-8 photoepoxy make it suitable for the manufacturing of microstructured particle detectors. This article aims to review some em...

Three-dimensional (3D) periodic dielectric structures were recorded in a commercial photoresist SU-8 by exposure to intensity patterns created by five interfering coherent femtosecond Ti : sapphire laser pulses. Periodic symmetry of these patterns was controlled by the choice of mutual convergence angles of the beams as well as their phases. The fabricated structures are mechanically and chemic...

Gauge coupling unification–The simplest(rank 4) GUT SU(5) classifies the 15 chiral fields in two SU(5) representations, 10 plus 5. Of course, one can introduce SU(5) singlet(s) which must be electrically neutral, and guarantees the GUT value of the weak mixing angle 3/8. The next simplest GUT is a rank 5 group SO(10). Its rank 5 subgroup SU(5)× U(1) can be a GUT group(the so-called flipped-SU(5...

There are two critical parameters for microbolometers: the temperature coefficient of resistance (TCR) of the sensing material, and the thermal conductance of the insulation structure. Cytochrome c protein, having a high TCR, is a good candidate for infrared detection. We can use SU-8 photoresist for the thermal insulation structure, given its low thermal conductance. In this study, we designed...

A micro corona motor was fabricated using a membraneless built-on X-ray mask. Sharp stator electrodes of this motor ionize air molecules and ionized charges transfer onto the rotor surface, resulting in rotating rotor motions by Coulomb forces. For good performance, the stator’s electrodes should be wide (axial) and have sharp tips. Therefore, X-ray lithography was adopted for precise, high asp...

BACKGROUND Solar urticaria (SU) is an uncommon photodermatosis characterized by erythema and whealing within minutes to a few hours after exposure to sunlight or an artificial light source. OBJECTIVE To determine the clinical features, photobiological characteristics and treatment outcomes in Thai SU patients visiting a tertiary referral hospital. METHOD A retrospective analysis of 13 patie...