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燃料電池用ポンプ
http://www.chemicaldaily.co.jp/news/200611/30/04601_2131.html

カシオ計算機は、携帯機器向け改質型燃料電池に最適なＥＯ（電気浸透）ポンプを開発した。ナノフュージョンが開発した電気浸透材料を用いて０．５ｃｃの小型サイズで高圧を維持しながらメタノールを高精度で送液できる。開発したのは、燃料電池の小型化に不可欠な送液用マイクロポンプ。シリカなどの誘導体である電気浸透材料で構成された管状の形態をしており、外側から電圧をかけることで内部の液体を動かす。小型でありながら高圧での送液ができるとともに、回転体がないため動作が無音。また脈動などの乱れも少ないなどの特徴を備える。１００キロパスカルで毎分９０マイクロリットルの送液量を維持できる。

Printable biofuel cell developed in Finland
http://www.physorg.com/news82223962.html
ラッカーゼをつかってアルコールや砂糖で発電する燃料電池を作ったとの事。
起電力0.7V、20μA/m^2だそうだ。
ラッカーゼはプリンタブルなので、電子ペーパーなどの電源になる課もしれんね。

An enzyme-based power source is a viable source of electricity for the rapidly proliferating RFID tags used in the medical sector and logistics. Applications include plasters containing a memory circuit and measuring electrode for temperature, and sensors monitoring food quality. VTT Technical Research Centre of Finland is developing printable biofuel cells in which enzymes convert the energy bound in the renewable fuels - sugar, alcohols, etc. - into electricity.

VTT is developing an enzyme-based power source that converts the chemical energy bound in the organic compounds (fuels) into electricity. The enzymes act as catalysts that facilitate the use of e.g. sugar and alcohols as fuels. VTT's invention is based on the use of the fungal laccase enzyme on the cathodic compartment. A patent on the solution, which has yielded a 0.7V voltage with a current density of 20 microampere per square metre, is pending. Laccase is also suitable for printable technology applications as it retains its ability to produce electricity even when printed on paper.

Printable enzyme-based power sources are compact, inexpensive and disposable. Potential applications include sensors used in the logistics chain, temperature sensors for food products, adhesive medical sensors and printed screens. Applications will probably become more widespread in the 2010s.

The enzymes replace the traditional precious metal catalysts, and the fuel cells operate with good overall efficiency in standard pressure at ambient temperature. The ability to mass-produce the fuel cells as printable products will enable a dramatic reduction in costs. They are also disposable, thanks to the biodegradable raw materials and fuels.