Biological Optical-to-Chemical Signal Conversion Interface: A Small-scale Modulator for Molecular Communications

Unveröffentlicht / Preprint


Details zur Publikation

Autor(en): Grebenstein L, Kirchner J, Stavracakis Peixoto R, Zimmermann W, Wicke W, Ahmadzadeh A, Jamali Kooshkghazi V, Fischer G, Weigel R, Burkovski A, Schober R
Jahr der Veröffentlichung: 2018
Sprache: Englisch


Abstract

Although many exciting applications of molecular communication (MC)
systems are envisioned to be at microscale, the available MC testbeds
reported in the literature so far are mostly at macroscale. This may
partially be due to the fact that controlling an MC system at microscale
is quite challenging. To link the macroworld to the microworld, we
propose a biological signal conversion interface that can also be seen
as a microscale modulator. This interface translates an optical signal,
which can be easily controlled using a light-emitting diode (LED), into a
chemical signal by changing the pH of the environment. The modulator is
realized using Escherichia coli bacteria that express the light-driven
proton pump gloeorhodopsin from Gloeobacter violaceus and, upon inducing
external light stimuli, can locally change their surrounding pH level
by exporting protons into the environment. Based on measurement data
from a testbed, we develop an analytical model for the induced chemical
signal as a function of the applied optical signal. Finally, using a pH
sensor as detector, we show for an example scenario that the proposed
setup is able to successfully convert an optical signal representing a
sequence of binary symbols into a chemical signal with a bit rate of 1
bit/min.


FAU-Autoren / FAU-Herausgeber

Ahmadzadeh, Arman
Lehrstuhl für Digitale Übertragung
Burkovski, Andreas Prof. Dr.
Professur für Mikrobiologie
Fischer, Georg Prof. Dr.-Ing.
Professur für Technische Elektronik
Grebenstein, Laura
Professur für Mikrobiologie
Jamali Kooshkghazi, Vahid
Lehrstuhl für Digitale Übertragung
Kirchner, Jens Dr.
Lehrstuhl für Technische Elektronik
Schober, Robert Prof. Dr.-Ing.
Lehrstuhl für Digitale Übertragung
Stavracakis Peixoto, Renata
Professur für Mikrobiologie
Weigel, Robert Prof. Dr.-Ing.
Lehrstuhl für Technische Elektronik
Wicke, Wayan
Lehrstuhl für Digitale Übertragung

Zuletzt aktualisiert 2018-14-08 um 09:23