Micro Robots To ‘Swim’ Through Human Body

Researchers have developed a tiny robot that could in theory swim through the bloodstream of a human being in order to deliver medicine to the problem area.

The development was made by a team of researchers led by Prof. Peer Fischer at the Max Planck Institute for Intelligent Systems in Stuttgart.

Engineered Scallop

The problem for researchers is that swimming or locomotion through water is not actually possible for tiny machines, because the viscosity is not right. However, in biological fluids such as blood, or the fluid found in a eye, movement does become possible, if driven by magnetic fields, as that fluid is a non-Newtonian fluid (i.e. the viscosity changes in response to pressure).

Nature Communications revealed that the researchers have now developed a robotic micro- scallop capable of swimming through this non-Newtonian fluid. Essentially, the robot moves like a scallop, opening and closing a pair of shells connected by a tiny hinge, to propel itself to the problem location within the human body.

The micro-scallop robot was made by a 3D printer, and each shell measures 300 microns thick and 800 micros wide. A human hair in comparison is 100 microns in diameter, so we are talking pretty small here. With something this tiny, it is not possible for it to carry all the motors, controllers, and indeed fuel/energy to power it. Instead, the micro-scallop has “rare-earth micro magnets” on each shell, so locomotion relies on exposure to an external magnetic field, which will cause the shells to open and close at different rates, and thus move.

A video of the development can be found here.

“This is great news because we can now use really simply actuation schemes….to build swimming micro robots that can move through tissue and biomedical relevant fluids,” said Prof. Peer Fischer

Weird Science

Developments like these may sound like something from a science fiction movie, but in reality technology advances are helping scientists explore new avenues in fields like medicine.

Last month for example, Google revealed that it is developing a ‘nanoparticle’ pill which once swallowed, will enter the bloodstream and “sniff out” the dangerous chemical signals given off by cells as they become diseased.

And in January this year Google revealed it had developed special contact lenses equipped with miniaturised sensors to analyse the tears in the eyes of diabetes patients, in order to determine when their blood sugar levels need to be adjusted.

Then in July it announced that it had teamed up with Swiss pharmaceutical giant Novartis to develop these ‘smart’ contact lenses to help people with diabetes track their blood glucose levels.

How well do you know the cloud? Take our quiz!

Tom Jowitt

Tom Jowitt is a leading British tech freelancer and long standing contributor to Silicon UK. He is also a bit of a Lord of the Rings nut...

Recent Posts

Norway Hit By DDoS Cyber Attacks From Pro Russian Group

Norwegian national security agency warns pro-Russian group has targetted private and public institutions in Norway…

17 hours ago

Google Tells Staff They Can Relocate After Roe v Wade Ending

After US Supreme Court last week removed women's reproduction rights, Google tells staff they can…

18 hours ago

Taiwan Developing Own Digital Currency – Report

Central bank of Taiwan confirms it is still working on its digital currency, but has…

20 hours ago

Tesla Cuts 200 Autopilot Jobs, Closes San Mateo Office – Report

More restructuring at Tesla with hundreds of bob losses and California office closure, where staff…

21 hours ago

US FCC Commissioner Urges Apple, Google To Remove TikTok

Fresh worry for TikTok, after FCC Commissioner writes to Apple and Google about removing the…

22 hours ago

Airbnb Permanently Bans Parties, With Few Exceptions

Victory for irate neighbours? Airbnb confirms its temporary Covid ban on parties in its listings…

22 hours ago