A New Opportunity
Powering represents the most pressing technological challenge hindering the realization and clinical use of bio-electronic micro-devices.
Here is a proposed solution to overcome powering challenges, materials, WPT mechanism and signal antenna:
Figure 5 - Methodology of proposed solution for IMDs
In Figure 5, conducting polymer film of 0.5-1 micrometer size was developed via electrospinning method. On this film printed photovoltaic cells and piezoelectric system was integrated via using printing technology. Material such as graphene shall be synthesized by hydrothermal method utilizing biowastes. In presence of sunlight, specific nanoparticles harvest photons of sunlight and photons are converted into electricity via photovoltaic cells. The electricity generated is then used as source of energy for pattern printed plates.
In Figure 5, using a patterned printed metal plate on polymeric film placed in-close proximity to skin, the output field can be focused to dimensions much smaller than the vacuum wavelength, creating a high energy density region within which the power-harvesting structure can be made extremely small. Outside of the body generates a nonstationary evanescent field to induce energy transfer through the propagating modes of a tissue volume.
In Figure 5, the wireless electro stimulator can insert into the lower epicardium of a human. The diameter weighs 50-100 mg and can generate 2.4-μJ pulses at rates dependent on the extracted power; its characteristic dimension is at least an order of magnitude smaller than existing commercial pacemakers.
