Isao Shitanda

Toward Wearable Energy Storage Devices: Paper-Based Biofuel Cells based on a Screen-Printing Array Structure

Abstract A novel paper‐based biofuel cell with a series/parallel array structure has been fabricated, in which the cell voltage and output power can easily be adjusted as required by printing. The output of the fabricated 4‐series/4‐parallel biofuel cell reached 0.97±0.02 mW at 1.4 V, which is the highest output power reported to date for a paper‐based biofuel cell. This work contributes to the development of flexible, wearable energy storage device.

Screen-printed Paper-based Three-electrode System with Long-term Stable and Instantaneously Usable Reference Electrode

An instantaneously usable fully printed paper-based three-electrode system was developed for use as cost-effective and disposable biosensors and ion sensors. The three-electrode system was composed...

Non-destructive Evaluation of Deteriorated Organic Coated Steels Using Surface Potential Measurement

Development of non-destructive evaluation method for infrastructure such as steel bridges with organic coatings Degradation of organic coated steels has been evaluated by surface potential measurement Fig.1 which can take data with non-contact. The degraded area obtained by the surface potential map of model specimen was almost the same as the actual corrosion area Fig.2 . A wet/dry cyclic corrosion test under a droplet of 0.5M NaCl solution was conducted. The surface potential profile changed after 3 cycles, and the deteriorated area grew with an increase of wet/dry cycles Fig.3 . The surface potential measurement is a valuable tool for the non-destructive estimation of the degradation of organic coated steels. Organic coatings have been generally used for most steel structures as a costeffective way for corrosion protection and ornamental design. Non-destructive and quantitative evaluation method has been required for an appropriate maintenance to reduce life cycle cost in recent years.