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A novel method using intense pulsed light (IPL) for the metal nano-island formation on carbon nanotube (CNT) was introduced.The newly developed IPL assisted DC sputter process improved platinum (Pt) catalytic utilization by forming nano-islands on CNTs.The sudden irradiation of high intensity of light on the Pt sputtered CNT causes surface-energy-driven diffusion at the interface and forms the array of Pt islands by the capillary instability.