Development of new electric wireless seawater communication

2020-0131-03
researcher's name
about researcher KAWARADA, Hiroshi Professor
affiliation
Faculty of Science and Engineering School of Fundamental Science and Engineering
research field
Electronic materials/Electric materials
keyword

background

● Academic : exploring the unknown deep sea
● Resources : available resources on the seabed accessible by developing underwater robot
● Telecommunication : construction of underwater IoT
　 (monitoring of Tsunami, water temperature, NaCl’s concentration, pH, etc.)

summary

● Electric communication utilizing conductivity of seawater
● Transmitter : metal electrode
        ⇔ Receiver : transistor shape sensor operating in solutions
● Apply square wave voltage to metal electrode
                  ➡ Pulse wave is transmitted to the receiver

predominance

●  Using ionic conduction ➡ high speed and isotropic propagation
●  Compact and low power for both transmitter and receiver
●  Using diamond for transistor ➡ stable operation in seawater

application/development

● Resources development : underwater robot control
　  (Global market size : about $ 1.2 billion forecast in 2023※1)
● Amusement : marine sport, communication between divers
● Ecosystem : conservation of marine environment and development of fishery

material

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same researcher's seeds

  • MOSFET on polycrystalline diamond
  • Vertically oriented graphite layers on diamond substrate
  • Boron-doped nanocrystalline diamond as a p-type transparent electrode
posted: 2020/02/06