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Vibrational Micro-robots in Viscoelastic Biological Tissues

Project description

Propelling microrobots

Microrobots are microsystems engineered to locomote in biological environments and carry out microscale biomedical tasks such as biosensing and drug delivery. However, microrobot propulsion in biological media presents a challenge as the rheological properties differ from those of water. Funded by the European Research Council, the VIBEBOT project aims to develop microrobots that can actively propel themselves in viscoelastic materials. The idea is to endow these microdevices with vibrational technology that will allow them to penetrate soft tissues and reach in vivo targets more efficiently. Researchers will mimic the rheological properties of biological fluids in vitro and optimise the shape, surface, material and gait of microrobots to facilitate propulsion.

Objective

Wireless micro-robots hold great potential for minimally-invasive medicine, since they may allow for targeted drug delivery, in vivo sensing, stimulation, and even new surgical procedures. However, the biggest hurdle for biomedical applications is the penetration of real biological media, for instance, mucus, vitreous, blood clots and tumour tissues. Most current micro-/nano-robots can propel in water, however, the same propulsion mechanisms do not readily transfer to viscoelastic biological media. One major bottleneck is that it is not possible to exert enough force for propulsion in a system that could one day also accommodate a human. The overall goal of this proposal is to develop vibrational microdevices that can actively propel and wirelessly sense in viscoelastic biological tissues. The excited mechanical vibration is coupled with the frequency-dependent fluidic rheology to increase the energy release rate, to reduce the penetration force needed for tissue rupture, and thus to facilitate an easier penetration of the tissues. We will investigate the fundamental mechanisms of propulsion at low Reynolds number in viscoelastic materials. The microrheology of the biological fluids will be measured and modelled, and it will allow us to optimize the shape and gait of the micro-robot to exploit the complex rheological properties of biological tissues and generate propulsion. The proposed work will also advance three-dimensional fabrication technologies for asymmetric micro-/nanostructures as key elements to interact with tissues to facilitate efficient locomotion. We will also develop novel sensing methods for in vivo sensing and localization of the microdevices. Our research will lead to a new class of micro-robots - the VIBEBOTS that will be able to actively penetrate real tissues, and open up outstanding opportunities for useful biomedical applications.

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Topic(s)

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2021-STG

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Host institution

DEUTSCHES KREBSFORSCHUNGSZENTRUM HEIDELBERG
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 878 978,00
Address
IM NEUENHEIMER FELD 280
69120 Heidelberg
Germany

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Region
Baden-Württemberg Karlsruhe Heidelberg, Stadtkreis
Activity type
Research Organisations
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 878 978,00

Beneficiaries (2)

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