Ingestible Wireless Capsule Sensor Made from Edible Materials for Gut Bacteria Monitoring

Ayaka Inami, Tetsuo Kan, Hiroaki Onoe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This report describes an ingestible capsule sensor that can wirelessly detect the activity of gut bacteria by irradiating microwaves from outside the body. The proposed sensor is composed of only edible materials: the critical sensing material is a dietary fiber, guar gum, that is decomposed by gut bacteria. We confirmed that the guar gum film can be decomposed by gut bacteria, bifidobacteria. For wireless communication, we fabricated an ingestible antenna made from rice paper and gold with a split-ring resonator (SRR), one of the elements of electromagnetic metamaterials. Our sensor fulfills swallowable size and wireless communication requirements for the first time and would be a safety sensor for gastrointestinal (GI) tract monitoring. We believe that our ingestible sensor could be an effective tool for non-invasive biological substances monitoring without retention risk.

Original languageEnglish
Title of host publication35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
PublisherIEEE Computer Society
Pages110-113
Number of pages4
ISBN (Electronic)9781665409117
DOIs
Publication statusPublished - 2022
Event35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022 - Tokyo, Japan
Duration: 2022 Jan 92022 Jan 13

Publication series

NameIEEE Symposium on Mass Storage Systems and Technologies
Volume2022-January
ISSN (Print)2160-1968

Conference

Conference35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
Country/TerritoryJapan
CityTokyo
Period22/1/922/1/13

Keywords

  • Capsule sensor
  • Edible electronics
  • Electromagnetic metamaterial
  • Ingestible sensor
  • Sprit-ring resonator
  • Wireless

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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