Controllability of Mobile Bionanosensors
Interconnecting bionanosensor networks and conventional devices is of considerable interest to realize the emerging concept of the Internet of NanoThings (IoNT) and the Internet of BioNanoThings (IoBNT) [1 ]. In this chapter, we consider interfacing mobil
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Controllability of Mobile Bionanosensors
Abstract Interconnecting bionanosensor networks and conventional devices is of considerable interest to realize the emerging concept of the Internet of NanoThings (IoNT) and the Internet of BioNanoThings (IoBNT) [1]. In this chapter, we consider interfacing mobile bionanosensors and external devices that can control the mobility of bionanosensors via molecular communication for target detection and tracking purposes. We first develop a simple model of bacterial chemotaxis to describe the mobility of bionanosensors. We then show how information theory can be used to evaluate the controllability of mobile bionanosensors. Keywords Externally control · Dynamic bionanosensor network bionanosensor · Controllability · Chemotaxis · Information theory
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4.1 Overview Bionanosensor networks may benefit from an external device that interfaces the monitoring environment where bionanosensors are distributed with the external environment. For target detection and tracking discussed in this book, an external device may be used to distribute bionanosensors in the monitoring environment and dynamically change the distribution of bionanosensors to help their target detection and tracking operations. An external device may also be used to initiate or terminate target detection and tracking operations. It may also be used to move bionanosensors to a certain location (e.g., a data collection point) in the monitoring environment where sensed data may be collected and analyzed. In this chapter, we consider externally controllable bionanosensor networks where an external device is used to control the mobility of bionanosensors. Figure 4.1 shows an overview of such networks where the interaction between an external device and a bionanosensor is highlighted. An external device is a micro or larger scale conventional device (e.g., implantable and ingestible medical devices [4]) and it releases a type of attractant molecule to form a concentration gradient in the environment. A bionanosensor is a micro-scale device composed of biomaterials and exists in the monitoring environment (e.g., in the human body). A bionanosensor has a chemo© The Author(s) 2016 Y. Okaie et al., Target Detection and Tracking by Bionanosensor Networks, SpringerBriefs in Computer Science, DOI 10.1007/978-981-10-2468-9_4
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4 Controllability of Mobile Bionanosensors
Fig. 4.1 Interaction between an external device and a bionanosensor
tactic ability to detect the attractant concentration gradient and changes its direction of movement based on that gradient. In the reminder of this chapter, we first describe a simple stochastic model to describe the mobility of bionanosensors (Sect. 4.2). We then show how information theory may apply to evaluate the controllability of mobile bionanosensors (Sect. 4.3).
4.2 Problem Formulation An external device chooses a single point in two-dimensional space where bionanosensors exist, releases a type of attractant molecule from the single point, and forms a concentration gradient
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