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Demonstration of temperature-plateau superheated liquid by photothermal conversion of plasmonic titanium nitride nanostructures.

A new interesting article has been published in Nanoscale. 2018 Oct 21;10(39):18451-18456. doi: 10.1039/c8nr05931d. Epub 2018 Oct 1. and titled:

Demonstration of temperature-plateau superheated liquid by photothermal conversion of plasmonic titanium nitride nanostructures.

Authors of this article are:

Ishii S , Kamakura R , Sakamoto H , Dao TD , Shinde SL , Nagao T , Fujita K , Namura K , Suzuki M , Murai S , Tanaka K .

A summary of the article is shown below:

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.

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