Application of composite particles to electronic devices

Mikihiko Kobayashi; Mitsuru Egashira; Kyoko Saito; Takehiro Dan; Norio Shinya

doi:10.1117/12.475029

11 July 2002 Application of composite particles to electronic devices

Mikihiko Kobayashi, Mitsuru Egashira, Kyoko Saito, Takehiro Dan, Norio Shinya

Proceedings Volume 4700, Smart Structures and Materials 2002: Smart Electronics, MEMS, and Nanotechnology; (2002) https://doi.org/10.1117/12.475029
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

Electroceramic particles with electrodes of solder are prepared y a low cost and high productivity process. The electroceramic particles can be used as single particle devices, and moreover as multi-functional devices by their assembling. PTCR material is one of the electroceramics, having a positive temperature coefficient of resistivity. We prepare the PTCR particles with electrodes of solder as follows. Semiconducting barium titanate (BaTiO₃) particles, a typical PTCR material, and solder particles are charged into a cylindrical vessel, and the vessel is rotated for several hours. The product is semiconducting BaTiO₃ coated by solder particles. The solder particles are flattened out at the surface of the core particle. The solder forms small dot-like islands, and they are isolated each other. Several applications of such kind of composite particles are described. Single particle device is a PTC thermistor, which consists of one composite particle of semiconducting BaTiO₃. Flexible and self-thermostatic sheets can be produced by packing the composite particles between two thin electrodes. Using NTC particles instead of the semiconducting BaTiO₃ single particle devices of NTC thermistor and flexible NTC sheets can be produced. Twin particles device is a combination of a single particle PTC thermistor and a single particle NTC thermistor in series, and will be a V-type thermistor, having both PTC and NTC properties. The V-type thermistor can be obtained also by stacking the layer of PTC composite particles and that of NTC composite particles in series. It can be applied to a protective device.

Citation Download Citation

Mikihiko Kobayashi, Mitsuru Egashira, Kyoko Saito, Takehiro Dan, and Norio Shinya "Application of composite particles to electronic devices", Proc. SPIE 4700, Smart Structures and Materials 2002: Smart Electronics, MEMS, and Nanotechnology, (11 July 2002); https://doi.org/10.1117/12.475029

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Particles

Composites

Ferroelectric materials

Semiconductors

Electrodes

Resistance

Electronic components

Show All Keywords

Keywords/Phrases

Search In:

Publication Years