外观
论文arXiv 2610.0906922 天前
面向高温热疗应用的感应加热微机器人局部热管理
原文链接：Localized Thermal Management of Induction-Heated Microrobots for Hyperthermia Applications（arXiv 2610.09069 · 发布日期：2026-10-06）
Localized Thermal Management of Induction-Heated Microrobots for Hyperthermia Applications
本文针对感应加热微机器人线圈寄生发热，比较外置水冷铜块与中空线圈内冷，并以100 s多点热电偶验证局部控温。
核心要点
- 交变磁场用于局部热疗时，也会在线圈内产生寄生欧姆热。
- 论文评估外部铜水块间接冷却与中空螺旋线圈内部直冷。
- 100 s测试中，间接水块因二次感应耦合失败，峰温达805°C。
- 直接内冷维持尖端63.4°C，并限制周围流体和边界升温。
验证范围与局限：验证限于100 s窗口、多点热电偶测试中的两种液冷线圈架构。
英文摘要 (Abstract)
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.
作者：Advika Balaji, Miguel F. Arevalo‐Castiblanco, Aaron T. Becker
来源
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