Demonstration of temperature-plateau superheated liquid by photothermal conversion of plasmonic titanium nitride nanostructures
Demonstration of temperature-plateau superheated liquid by photothermal conversion of plasmonic titanium nitride nanostructures
复制标题
通过等离子体氮化钛纳米结构的光热转换演示温度平台过热液体
DOI：
10.1039/c8nr05931d
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发表时间：
2018
期刊：
影响因子：
6.7
通讯作者：
Tanaka Katsuhisa
中科院分区：
文献类型：
--
作者：
Ishii Satoshi;Kamakura Ryosuke;Sakamoto Hiroyuki;Dao Thang D.;Shinde Satish L.;Nagao Tadaaki;Fujita Koji;Namura Kyoko;Suzuki Motofumi;Murai Shunsuke;Tanaka Katsuhisa
液体可以被加热到沸点以上，称为过热。在这种亚稳态中，液体温度随着液体被加热而保持增加。相比之下，我们的实验表明，过热水的温度可以保持恒定，即使在升高的加热功率。水加热是通过在蓝宝石衬底上的等离子体氮化钛纳米结构在连续波激光照射的照射下的光热转换来完成的。对于乙二醇和2-乙酰氧基-1-甲氧基丙烷也观察到温度恒定的过热，并且归因于衬底的高热导率。这种通过简单方法实现的独特的过热可以用于光学捕获和各种光学加热应用。
A liquid can be heated up above its boiling point, known as superheating. In this metastable state, the liquid temperature keeps increasing as the liquid is being heated. In contrast, we experimentally demonstrate that the temperature of superheated water can be kept constant even at elevated heating power. Water heating is done by the photothermal conversion of plasmonic titanium nitride nanostructures on a sapphire substrate under the illumination of continuous wave laser irradiation. The temperature-constant superheating is also observed for ethylene glycol and 2-acetoxy-1-methoxypropane, and is attributed to the high thermal conductivity of the substrate. This unique superheating yet achieved by a simple method can be useful in optical trapping and various optical heating applications.