Herein, wooden-stick-based thermoelectric legs are introduced as a new type of thermoelectric legs. As a proof of concept, graphite- and bismuth-coated wooden sticks are fabricated with a green method, and their use as thermoelectric elements is successfully demonstrated by constructing a test thermoelectric generator. The generator based on 20 pairs of p–n legs shows a maximum power output of ∼18 nW on heating one side of the device to 70°C. The strategy can suitably be extended to other good thermoelectric materials. The approach can be promising due to the ultralow thermal conductivity of the wooden substrate pillars in contrast to other typical substrates such as glass, and hence, better thermal gradients across the device can be achieved. These environmentally friendly, non-toxic and low-cost wooden-stick-based thermoelectric devices with good thermoelectric material coatings can be conveniently used for low-grade industrial waste heat conversion applications.

中文翻译：

---

制造木制热电腿以构建发电机

本文介绍了一种基于木棒的热电腿作为一种新型热电腿。作为概念验证，石墨和铋涂层木棒采用绿色方法制造，并通过构建测试热电发电机成功证明了它们作为热电元件的用途。基于 20 对 p-n 腿的发电机在将设备的一侧加热到 70°C 时显示出 18 nW 的最大功率输出。该策略可以适当地扩展到其他良好的热电材料。由于与玻璃等其他典型基板相比，木质基板柱的导热率超低，因此该方法很有前景，因此可以实现整个设备的更好的热梯度。这些环保、