Dielectrophoretic Relay Assisted Molecular Communication for In-Sequence Molecule Delivery

Area of Science:

• Biomedical Engineering
• Electrical Engineering
• Nanotechnology

Background:

• Interfacing external devices with in-vivo molecular networks is crucial for advancing molecular communication.
• Lab-on-chip (LOC) technologies are being integrated with molecular communication, utilizing techniques like Dielectrophoresis (DEP) for molecule manipulation.
• DEP is a technique used in LOC for precise control and transportation of molecules.

Purpose of the Study:

• To propose and theoretically analyze the use of DEP planar electrodes as relays in molecular communication systems.
• To investigate the impact of DEP relays on the in-sequence delivery of molecules within a diffusive channel.
• To determine the information rate and channel capacity improvements offered by DEP relays.

Main Methods:

• A theoretical system model was developed to incorporate DEP relays into a diffusive molecular communication channel.
• The probability of in-sequence molecule delivery was analyzed with and without DEP relays.
• Analytical expressions for the information rate of the DEP-based channel were derived for in-sequence delivery.

Main Results:

• Introducing DEP relays in a diffusive channel significantly improves the probability of in-sequence molecule delivery.
• The information rate for in-sequence delivery through a diffusive channel increased by 26% with the incorporation of DEP relays.
• Despite sensitivity to noise variance, DEP relays substantially enhance the overall channel capacity.

Conclusions:

• DEP relays offer a promising solution for maintaining in-sequence molecular delivery in communication systems.
• The integration of DEP technology into molecular communication channels leads to significant improvements in information rate and channel capacity.
• DEP relays represent a key advancement in bridging external devices with in-vivo molecular networks.