Celebrating Prof. Cesar Sciammarella’s 100th Anniversary and Contributions

This special issue celebrates the 100th anniversary of Prof. Cesar Sciammarella's birth and his profound contributions to experimental mechanics. The article delves into his pioneering work in Moiré, holography, speckle interferometry, and optical metrology, which have expanded the boundaries of measurement science. It highlights his foundational models and innovations, such as the NanoFraction system, which incorporates artificial intelligence for super-resolution imaging. The selected papers illustrate the evolution of experimental mechanics, from classical optical interferometry to modern digital processing and high-speed instrumentation. The issue also explores the merging of optical methods with multiphysics and data-driven frameworks, demonstrating the future of noninvasive optical diagnostics. Additionally, it celebrates Sciammarella's legacy as a mentor, educator, and author, recognized through prestigious honors and his widely used textbook, Experimental Mechanics of Solids. The contributions trace a coherent continuum from the analog origins of optical metrology to today’s intelligent, multi-scale, high-speed experimental systems, reflecting Sciammarella’s extraordinary impact on the field.