Reactive messengers for digital molecular communication with variable transmitter-receiver distance

Area of Science:

• Biotechnology
• Nanotechnology
• Communication Systems

Background:

• Molecular communication uses molecules in fluids to transmit information as concentration pulses, akin to molecular bits.
• Diffusion naturally broadens these molecular bits, limiting reliable information transfer distance.
• Optimizing molecular messengers is crucial for extending communication range.

Purpose of the Study:

• To develop a new molecular communication paradigm for long-range information transfer.
• To overcome the distance limitations imposed by diffusion in molecular communication.
• To investigate the use of chemical reactivity in molecular messengers for stable signal transmission.

Main Methods:

• Utilized fluorescent molecules switched by pH-driven hydrolysis.
• Employed numerical solutions of differential equations to simulate information transport.
• Developed and tested a prototypal molecular communication platform.

Main Results:

• Demonstrated that exploiting chemical messenger reactivity maintains a stable signal at the receiver over a wide range of distances.
• Theoretical predictions of stable signal transmission were fully verified experimentally.
• The new method effectively overcomes diffusion-induced signal degradation.

Conclusions:

• Chemical reactivity offers a viable strategy to enhance molecular communication range and stability.
• This research presents a significant advancement in overcoming distance limitations in molecular communication.
• The developed platform validates the potential of reactive molecular messengers for practical applications.