Tokyo Shibaura Denki Kabushiki Kaisha

Masahiko Yotuyanagi

Masahiko Hirose

Tsuyoshi Yasui

Toshio Fukaya

There is disclosed a method of making a solar energy collector element which comprises the step of forming a carbon containing film on at least the sunlight receiving surface of a substrate which is made of an iron metal material, and then heat-treating at least the sunlight receiving surface in an oxidizing atmosphere. The solar energy collector element made by the method of the present invention is superior in selective absorption characteristics for the solar energy and inexpensive in manufacturing.

Method of making a solar energy collector element

There is provided an apparatus for processing a surface of an object to be processed by utilizing microwave plasma within a plasma-producing chamber, which comprises a microwave power-generating means; a wave guide for transmitting microwaves generated from said microwave power-generating means; a closed vessel constituting the plasma-producing chamber separated from said wave guide by a separating means; an antenna for transmitting microwaves, one end thereof protruding into the wave guide and another end thereof protruding into the closed vessel and a supporting means, for holding or supporting the electroconductive object to be processed, provided within the closed vessel and so attached to the antenna that the antenna and the electroconductive object may be electrically connected to each other.

Growing community of inventors

Yokohama, Japan

Masahiko Yotuyanagi