Smoke sensor using mass controlled layer-by-layer self-assembly of polyelectrolytes films

Masayoshi Yamada, Seimei Sha Shiratori

Research output: Contribution to journalConference articlepeer-review

38 Citations (Scopus)


Remarkable smoke-detecting characteristics were established by forming ultra-thin organic films on an electrode of a quartz crystal microbalance (QCM) by a layer-by-layer sequential adsorption process utilizing polyelectrolytes. The amount of smoke adsorbed onto the polyelectrolyte film was controlled by adjusting the bilayer composition ratio of polycation/polyanion using the automatic dipping machine with a film-mass control system we have developed. The optimization of film structure for the purpose of developing a highly sensitive sensor for smoke was established for the first time. By using a newly built system and these characteristics, an extremely sensitive smoke detector was developed.

Original languageEnglish
Pages (from-to)124-127
Number of pages4
JournalSensors and Actuators, B: Chemical
Issue number1-3
Publication statusPublished - 2000 Jun 10
EventTransducers '99 - 10th International Conference on Solid-State Sensors and Actuators - Sendai, Japan
Duration: 1999 Jun 71999 Jun 10


  • Layer-by-layer adsorption
  • Polyelectrolyte
  • Quartz crystal microbalance
  • Self-assembly
  • Smoke sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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