Photogated humidity-driven motility.
Photogated humidity-driven motility.
复制标题
DOI：
10.1038/ncomms8429
复制
发表时间：
2015-06-11
影响因子：
16.6
通讯作者：
Naumov, Pance
中科院分区：
文献类型：
--
作者：
Zhang, Lidong;Liang, Haoran;Jacob, Jolly;Naumov, Pance
湿致运动是能量转换的基本过程，对于需要响应大气湿度昼夜节律的非接触式致动的应用至关重要。在这里，我们证明了由水蒸气的快速和各向异性吸附和解吸引起的机械双稳性，通过一个灵活的动态元件，利用化学势跨越非常小的湿度梯度永动机可以有效地调制与光。制备能够与周围环境快速交换水的机械坚固的材料，其经历快速运动以有效地进行周期性形状重构，其中翻转频率<150 min-1。该元件可以举起比其自身重185倍的物体，并可以运输比其自身重120倍的货物。由于含有偶氮苯的共轭物作为光敏掺杂剂，这种完全由湿度驱动的自驱动可以用紫外光远程控制，从而为下一代智能仿生混合物奠定了平台。 湿致运动对于需要响应大气湿度变化的致动应用至关重要。在这里，作者报告了一种致动材料，该致动材料能够由湿度梯度驱动快速和永久运动，并结合了可以由光控制的光敏掺杂剂。
Hygroinduced motion is a fundamental process of energy conversion that is essential for applications that require contactless actuation in response to the day–night rhythm of atmospheric humidity. Here we demonstrate that mechanical bistability caused by rapid and anisotropic adsorption and desorption of water vapour by a flexible dynamic element that harnesses the chemical potential across very small humidity gradients for perpetual motion can be effectively modulated with light. A mechanically robust material capable of rapid exchange of water with the surroundings is prepared that undergoes swift locomotion in effect to periodic shape reconfiguration with turnover frequency of <150 min−1. The element can lift objects ∼85 times heavier and can transport cargos ∼20 times heavier than itself. Having an azobenzene-containing conjugate as a photoactive dopant, this entirely humidity-driven self-actuation can be controlled remotely with ultraviolet light, thus setting a platform for next-generation smart biomimetic hybrids. Hygroinduced motion is fundamental for applications that require actuation in response to changes in atmospheric humidity. Here, the authors report an actuating material that is capable of fast and perpetual motion driven by humidity gradient incorporating a photoactive dopant that can be controlled by light.
登录
查看更多内容
湿气激活扭转石墨烯纤维电机
影响因子：
29.4
作者：
Cheng, Huhu;Hu, Yue;Qu, Liangti
通讯作者：
Qu, Liangti
影响因子：
56.9
作者：
Gerbode, Sharon J.;Puzey, Joshua R.;Mahadevan, L.
通讯作者：
Mahadevan, L.
影响因子：
56.9
作者：
SMELA, E;INGANAS, O;LUNDSTROM, I
通讯作者：
LUNDSTROM, I
影响因子：
15
作者：
Nath, Naba K.;Pejov, Ljupco;Naumov, Pance
通讯作者：
Naumov, Pance
DOI：
10.1126/science.1230262
发表时间：
2013-01-11
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Ma M;Guo L;Anderson DG;Langer R
通讯作者：
Langer R