top of page
Search
  • Writer's pictureProf. Saptarshi Basu

Paper published in International Journal of Multiphase Flow

Updated: Jan 18, 2022

Title : Laser-induced deformation and fragmentation of droplets in an array


Team: D. Chaitanya Kumar Rao, Awanish Pratap Singh and Saptarshi Basu


Abstract: Droplet–droplet interactions is ubiquitous in various applications ranging from medical diagnostics to enhancing and optimizing liquid jet propulsion. We employ an experimental technique where the laser pulse interacts with a micron-sized droplet and causes optical breakdown. The interaction of a nanosecond laser pulse and an isolated spherical droplet is accurately controlled and manipulated to influence the deformation and fragmentation of an array of droplets. We elucidate how the fluid dynamic response (such as drop–drop and shock–drop interactions) of an arrangement of droplets can be regulated and optimally shaped by laser pulse energy and its interplay with the optical density of liquid target. A new butterfly type breakup is revealed, which is found to result in controlled and efficient fragmentation of the outer droplets in an array. The spatio-temporal characteristics of a laser-induced breakdown dictate how shock wave and central droplet fragments can influence outer droplets. The incident laser energy and pulse width employed in this work are representative of diverse industrial applications such as surface cleaning, nano-lithography, microelectronics, and medical procedures such as intraocular microsurgery.


26 views0 comments

Recent Posts

See All

Paper Accepted in EXIF!

Title: Elasticity affects the shock-induced aerobreakup of a polymeric droplet Author: Navin Kumar Chandra, Shubham Sharma, Aloke Kumar and Saptarshi Basu

Patent Granted!

Title: A Method and Apparatus for Measuring Geometric Characteristics of Particles Patent no. : 518811 Inventors: Saini Jatin Rao, Shubham Sharma, Cameron Tropea, Saptarshi Basu Brief description: Thi

Patent Granted!

Title: Hybrid Fuel Injector for Combustion Patent no.: 509344 Inventors: Sonu Kumar and Spatarshi Basu

Comments


bottom of page