Kaohsiung city located in the southern Taiwan is an industrial town and air pollutants were emitted from factories adjacent zones. In order to track pollution emission sources, a needle trap sampler (NTS), which micro solid phase microextraction (SPME) sampling device, was carried by quadrotor drone extract organic vapors industries. The NTS fabricated packing divinylbenzene (DVB) particles of ...

The musty-odor compounds (MOCs) 2-methylisoborneol (2-MIB) and geosmin in water samples were determined by a purge-and-trap method using a needle-type extraction device followed by gas chromatography-mass spectrometry. For the extraction of these compounds, a triple-layer-type extraction needle containing divinylbenzene and activated carbon particles as the particulate extraction media was intr...

In this study, a fiber-packed needle trap device (NTD) was developed by packing heat-resistant fibers with polyethylene glycol sol-gel coating into 21-gauge, stainless steel needle. The has numerous advantages, including uniform roughness and large specific surface area. prepared NTD used for headspace extraction of five polychlorinated biphenyls (PCBs) in water samples, determined gas chromato...

We demonstrate an optical waveguide device, capable of supporting the high, in-vacuum, power necessary for trapping a single atom or cold ensemble with evanescent fields. Our photonic integrated platforms, suspended membrane waveguides, successfully manages powers 6 mW (500 um span) to nearly 30 (125 over un-tethered span. This platform is compatible laser cooling and magneto-optical traps (MOT...

Argentine ant, Linepithema humile (Mayr), management is constrained, in large part, by polydomy where nestmates are distributed extensively across urban landscapes, particularly within mulch. Management with trap-mulching is a novel approach derived from trap-cropping where ants are repelled from a broad domain of nest sites to smaller defined areas, which are subsequently treated with insectic...

We build a microfluidic trap-based microsphere array device. In the device, we design a novel geometric structure of the trap array and employ the hydrodynamic trapping mechanism to immobilize the microspheres. We develop a comprehensive and robust framework to optimize the values of the geometric parameters to maximize the microsphere arrays’ packing density. We also simultaneously optimize mu...

For evaluation of suspected infectious spondylitis, 19 consecutive patients underwent imaging-guided spine biopsy with needle aspiration and a percutaneous diskectomy device to determine if the diskectomy device provided diagnostic value. In 79% of cases, the diskectomy device yielded a specimen when needle aspiration failed. A significantly greater yield of specimen was observed with the diske...