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In this paper, a simplified process for TGV interposer is presented for RF applications. Sand blasting method and thinning/polishing process is utilized to form TGVs on Glass wafer. TGV interposer metallization of is realized with Al sputtering followed by wet chemical etching. Based on the process, TGV interposer is fabricated and the TGV sample measures about 361µm in the diameter at the front side,...
Graphene has many novel properties such as the ability of guiding plasmonic wave at terahertz (THz) frequencies, chemical potential shift as the carrier density changed. Since carrier density of graphene can be modified by bias voltage, the coupling coefficients or propagation loss of graphene plasmon can be modulated easily. A compact wideband terahertz modulator is proposed to modulate and guide...
An improved spectral-domain exponential matrix technique is proposed for investigating on the interaction of a THz wave with planar structures consisting of multilayer graphene sheets and bianisotropic slabs. Hybrid effects of different parameters, such as THz wave incident direction, its frequency and polarization, chemical potentials of the graphene sheets and constitutive tensors of the bianisotropic...
The composite ACF-DSA electrode was made on the basis of both commercial DSA anode and ACF electrode so as to degrade organics more effectively and completely. The composite electrode was proved to be more powerful for tetracycline decolorization and mineralization than using the DSA and ACF alone. With the aid of 254 nm ultraviolet irradiation and hydrogen peroxide, the COD removal efficiency was...
Non-thermal plasma combined with activated carbon was developed to purify wastewater from paracetamol factory. The effect of discharge time, discharge voltage, initial pH value of wastewater, velocity of the air flow and whether adding activated carbon on the COD degradation and decolorization ratio were investigated. It was found that as discharge time prolonged, decolorization ratio decreased but...
Hydrogen sulfide (H2S), an extremely corrosive and toxic gas, was commonly generated by urban treatment plants, gas and oil refineries, paper and pulp industries and so on. Biofiltration, which was considered as cost-effective and environment-friendly, evoked substantial attention in recent years. In this study, a biotrickling filter filled with polypropylene pall rings was constructed, where efficient...
For most people, majority of their lives are spent in an indoor environment. With the improvement of living, indoor air pollution is impacting human health. In this paper, through analysis of sources and adverse health effects of several common indoor air pollutants, air pollutants are major contributing factors to chronic diseases and mortality. It should be treated urgently with the people's standard...
Perfluorocarboxylates (PFCAs) are the subject of increasingly intense environmental research due to their persistence, bioaccumulation, toxicity, and global distribution. In order to determine wide chain length PFCAs simultaneously, weak anion exchange (WAX) cartridges have recently been used for solid phase extraction (SPE) in analysis of these chemicals in environmental water samples. However, given...
The effects of ultra high-pressure (UHP) on the growth and its ability of beta-carotene biosynthesis of Rhodotorulaglutinis RG-8 were studied. After the treatments of 5 repeated cycles at 300 MPa for 15 min, the barotolerant mutant RG-8-9 was obtained from this strain. The survival ratio of the parent strain RG-8 was increased from 1.40times10-3% after the treatment of first cycle to 1.47times10-1...
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