Smaller structures are associated with ______ thermal relaxation times (TRT).

Smaller structures are associated with shorter thermal relaxation times (TRT) because they have a greater surface area-to-volume ratio, which allows heat to dissipate more quickly. As a result, when energy is applied, these smaller structures can absorb heat rapidly and also release it swiftly, resulting in a quicker cooling process. This is particularly important in applications like electrolysis and laser treatments, where precise control over temperature is crucial to avoid damaging surrounding tissues while targeting specific areas effectively. In contrast, larger structures tend to retain heat longer, leading to longer thermal relaxation times, which can impact the safety and efficacy of various treatments.