We replace a commonly used Au film with an Au/Ag bimetallic film working as the sensing
chip in the commercial surface plasmon resonance (SPR) instrument, Biacore 3000. The
bimetallic chip gives out sharper SPR dip than that by the chip made of an Au film which can
improve the sensitivity and accuracy. The applicability and stability of the bimetallic chip on the
Biacore 3000 are tested by real-time monitoring of biological coupling processes between
Sulfamethoxazole (SMX) and anti-SMX. The limit of detection of SMX is 1.8ng/ml.
Two laser-machined high-sensitivity fiber-optic Fabry-Perot (F-P) high temperature sensors based on
sapphire and silica fibers are fabricated by laser-micromachining and demonstrated in this paper, respectively. The
temperature characteristics of the sapphire and silica fiber sensor are investigated over a temperature range from
100°C to 1100°C. Experiment result shows that the sapphire F-P sensor has a temperature sensitivity of ~50
pm/°C with a linearity of 0.999, which is 5 times higher than that of the silica F-P sensor.
The characteristics of the magnetic confined discharges under high gas pressure (> 104 Pa) are investigated, e.g. electron motion equation under electromagnetic fields, electron transport coefficients, the influences of magnetic field and gas pressure on the discharge behavior. The electron mobility (mu) and conductivity (sigma) in the discharge space may change under the influences of magnetic field. Other side, as the increase of gas pressure, the impact frequency between electron and gas molecule will increase, this will increase the electron mobility (mu) and conductivity (sigma) . In the high gas pressure the stable discharge can be obtained only with the high magnetic flux density. This conclusions are proved from the experiments of TEA---CO2 laser and excimer laser.
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