Highly focused supersonic microjets

Yoshiyuki Tagawa; Nikolai Oudalov; Claas Willem Visser; Ivo R. Peters; Deveraj van der Meer; Chao Sun; Andrea Prosperetti; Detlef Lohse

arXiv · 1112.2517

Highly focused supersonic microjets

Yoshiyuki Tagawa·Nikolai Oudalov·Claas Willem Visser·Ivo R. Peters·Deveraj van der Meer·Chao Sun·Andrea Prosperetti·Detlef Lohse

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Abstract

The paper describes the production of thin, focused microjets with velocities up to 850 m/s by the rapid vaporization of a small mass of liquid in an open liquid-filled capillary. The vaporization is caused by the absorption of a low-energy laser pulse. A likely explanation of the observed phenomenon is based on the impingement of the shock wave caused by the nearly-instantaneous vaporization on the free surface of the liquid. An experimental study of the dependence of the jet velocity on several parameters is conducted, and a semi-empirical relation for its prediction is developed. The coherence of the jets, their high velocity and good reproducibility and controllability are unique features of the system described. A possible application is to the development of needle-free drug injection systems which are of great importance for global health care.

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Yoshiyuki Tagawa, Nikolai Oudalov, Claas Willem Visser, Ivo R. Peters, Deveraj van der Meer, Chao Sun, Andrea Prosperetti, Detlef Lohse. 2012-04-27. Highly focused supersonic microjets. https://arxiv.org/abs/1112.2517

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