Optical antennas play an important role in optical field manipulation. Among them, nanoscale bowtie have been extensively studied for its high confinement and enhancement. In this mini-review, we start with a brief introduction of underlying physics. Then review the applications respect to optically electrically excited antennas. Optically driven enable set such as near-field imaging/trapping, ...

an air filter is a significant element of any mechanical ventilation system. however, the importance and performance evaluation of air filters have not been well publicized and related scientific reports are scarce. in this study, a transportable, off-line, air filter-testing unit (the unit) was designed and utilized to simulate the filter housing of a mechanical ventilation system. the unit wa...