New application of microbial fuel cell-based biosensor for monitoring the quality of actual potato chips’processing wastewater

In this study,a dual-chamber microbial fuel cell(MFC)fed with actual potato chips’processing wastewater(PCPW)was tested as a biosensor.The performance of MFC-based biosensor was evaluated in terms of the current measurement range,toxicity detection and sensitivity,and the operational stability.The results revealed that the MFC can simply be converted to an online biosensor unit to detect the harmful effect of suspended solids and acidic content in the actual PCPW on the anodic attached biofilm and the values of the generated current as well.A notable decrease in the current values was observed indicating the adverse effects of the harmful matters in the PCPW fed to the biosensor unit.The results proposed a competition between the harmful components and the favorable substrate in binding to the redox complex.An excellent fitting was obtained between the experimental and predicted results by I_(Km) model with determination coefficient(R^(2))and mean-square-error values of 0.927 and 0.363,respectively.Additionally,a new approach was developed based on direct measurement of actual field data to replace the conventional statistical methods.

A Rapid Processing Technology of Water Quality Microfluidic Chip

In this study,a unique rapid processing technology for microfluidic chips made of polymethylmethacrylate(PMMA)was realized.The common laser engraving machine is used to etch the chip reaction unit and microchannel,and the printing chip is what you see is what you get;the pressurized heat sealing technology is used to quickly complete the chip sealing and packaging;the metal electrodes and lines that need to be laid are embedded into the chip by hot melting;the contact points on the fixed base of the contact chip card are used to connect with the external equipment,so as to make the bearing sample react,detect and complex lines and chips.It is self-contained and isolated from the external equipment circuit.The chip becomes disposable and can be replaced quickly and conveniently.The chip processed by this technology has rapid,cheap and convenient improvement and innovation,which makes the production of microfluidic chip easier and more practical,and even makes the chip a disposable consumable with general interface,which will greatly promote the industrialization of microfluidic chip,and has market-oriented promotion value in the field of water quality and food detection.

CMOS vision sensor with fully digital image process integrated into low power 1/8-inch chip

A digital still camera image processing system on a chip, different from the video camera system, is pre- sented for mobile phone to reduce the power consumption and size. A new color interpolation algorithm is proposed to enhance the image quality. The system can also process fixed patten noise （FPN） reduction, color correction, gamma correction, RGB/YUV space transfer, etc. The chip is controlled by sensor regis- ters by inter-integrated circuit （I2C） interface. The voltage for both the front-end analog and the pad cir- cuits is 2.8 V, and the volatge for the image signal processing is 1.8 V. The chip running under the external 13.5-MHz clock has a video data rate of 30 frames/s and the measured power dissipation is about 75 roW.