发表机构
University of Houston; West Windsor-Plainsboro High School North（休斯顿大学; 西温莎-普莱恩斯伯勒北高中）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文针对感应加热微机器人的热管理难题，评估了两种液冷架构，发现直接内部冷却优于间接水块，能有效隔离电磁工作区并维持局部高温，为热疗应用奠定硬件基础。
AI 中文摘要
感应加热微机器人面临一个基本的热管理挑战：用于局部热疗的交变磁场同时会在驱动线圈内产生寄生欧姆加热。常规冷却方法可能失效，因为放置在线圈附近的导电冷却结构会与随时间变化的场耦合，产生额外的电磁损耗。本文通过评估两种旨在隔离电磁工作区的液冷框架来解决这一架构限制：一种利用外部铜水块的间接配置，以及一种将冷却剂内部引导通过空心螺旋线圈的直接架构。在100秒窗口内使用多点热电偶遥测进行评估，间接水块配置因与水块本身的二次感应耦合而失败，该水块充当了非预期的感受器，将水块温度推至805°C的极端峰值。相比之下，直接内部冷却架构成功地在源头提取了欧姆损耗，维持了局部消融尖端温度63.4°C，同时严格限制周围流体和边界表面分别低于33.9°C和37.6°C的设定阈值。这些结果确立了线圈级流体集成作为热隔离微机器人驱动的一个关键设计原则，并为未来空间控制的热疗提供了硬件基础。
英文摘要
Induction-heated microrobots face a fundamental thermal management challenge: the alternating magnetic fields required for localized hyperthermia simultaneously generate parasitic ohmic heating within the actuation coils. Conventional cooling approaches can fail because conductive cooling structures placed near the coil can couple to the time-varying field, generating additional electromagnetic losses. This paper addresses this architectural limitation by evaluating two liquid-cooling frameworks designed to isolate the electromagnetic workspace: an indirect configuration utilizing an external copper water block, and a direct architecture routing coolant internally through a hollow helical coil. Evaluated over a 100~s window with multi-point thermocouple telemetry, the indirect water-block configuration failed due to secondary inductive coupling with the block itself, acting as an unintended susceptor that drove the block temperature to an extreme peak of 805$^{\circ}$C. In contrast, the direct internal cooling architecture successfully extracted ohmic losses at the source, sustaining a localized ablation tip temperature of 63.4$^{\circ}$C while strictly restricting surrounding fluid and boundary surfaces below defined thresholds of 33.9$^{\circ}$C and 37.6$^{\circ}$C, respectively. These results establish coil-level fluidic integration as a key design principle for thermally isolated microrobot actuation and provide a hardware foundation for future spatially controlled hyperthermia.
Comments6 pages, 10 figures, Submitted to ICRA 2026
