为解决机器人辅助血管内手术中缺乏触觉反馈的难题，研究人员开发了一种基于铁磁流体（ferrofluid）的触觉引导系统。该系统通过磁场调控铁磁流体黏度变化，模拟血管内器械接触力，实验证实其可提供方向性触觉反馈（感知准确率44%），为提升手术安全性和操作直觉性提供了新思路。

为了对磁驱系统的可靠性进行全面评估，研究人员开展了往复运动实验，控制FDR在两个相邻线圈之间重复运动。结果表明，即使经过1000次循环，FDR仍然能够实现精确跟踪和有效驱动，验证了系统具有良好的重复定位精度与稳定的驱动性能。此外，研究团队还通过仿真和实际测量进行热分析（图7）。结果表明，在额定工作电流（0.1 A）下，线圈表面温度稳定在40°C，即使在最大实验电流（0.15 ...

The ferrofluid used was a cheap, commercially available formulation based on mineral oil and magnetite nanoparticles,” says Koser, explaining just how simply their device was built. Chain reactions ...

Ferrofluid, the liquid invented by NASA in the 1960s as a rocket fuel, has some strange and wonderful properties. Around a magnet, it pimples into glimmering cones that dance and shrink or grow ...

Spinning around: magnetic oscillations in a BEC. (Courtesy: S Lepoutre et al / Phys. Rev. Lett.) Collective spin oscillations have been spotted for the first time in an ultracold atomic gas. The ...

Ferrofluid is a wonderous substance. It’s a liquid goop that responds to magnetic fields in exciting and interesting ways. It’s actually possible to make it yourself, and it’s cheap, too!

"Ferrofluid is an example of nanotechnology and, when presented in the right manner, is very successful at creating interest were there was none before," Haines wrote on the Kickstarter campaign.

A small bottle containing ferrofluid will set you back a mere $19, a glowing alien head is $49, and the rocket-shaped lava lamp starts at $74. A $99 version comes with added ferrofluid.

The Van Der Waals ferrofluid speaker was created and launched by Sergey Kuznetsov via crowdfunding websites and provides user with high-end audio visualisation in a compact and modern spherical ...

Ferrofluid is fun. You’ve probably seen all kinds of demos with it bouncing around in response to magnetic fields, or dancing ...