Effect of heat source on the growth of dendritic drying patterns
Kiran M Kolwankar Pulkit Prakash Shruthi Radhakrishnan Swadhini Sahu Aditya K Dharmadhikari Jayashree A Dharmadhikari Deepak Mathur
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Shining a tightly-focussed but low-powered laser beam on an absorber dispersed in a biological fluid gives rise to spectacular growth of dendritic patterns. These result from localized drying of the fluid because of efficient absorption and conduction of optical energy by the absorber. We have carried out experiments in several biologically relevant fluids and have analysed patterns generated by different types of absorbers. We observe that the growth velocity of branches in the dendritic patterns can decrease below the value expected for natural drying.
Kiran M Kolwankar1 Pulkit Prakash2 Shruthi Radhakrishnan2 Swadhini Sahu2 Aditya K Dharmadhikari3 Jayashree A Dharmadhikari4 Deepak Mathur3
Volume 97, 2023
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