| 摘要 |
PURPOSE:To obtain such a high density recording medium which induces a chemical change or physical change in a molecular unit by providing the monomolecular film of a metallic chelate compd. having the N=N bond which desorbs metallic ions or metallic atoms by cistrans isomerization when applied with the rays of light or the cumulative film thereof and electrodes. CONSTITUTION:The chelate complex molecular film cumulated to the two layers consisting of cis-type chelate coordinate molecules 1 and metallic ions (or metallic atoms) 3 is formed on a glass substrate 5 on which a transparent electrode 7 is deposited by evaporation. The substrate constituted by laminating a fatty acid 4 on a glass substrate 5 on which another transparent electrode 7 is deposited by evapora tion is formed and is disposed to face the above-mentioned substrate. A bias voltage is applied between both electrodes and trans-type isomerizing light 6 consisting of the light such as UV rays are visible light which can supply the energy necessary for isomerization is irradiated thereto according to a certain pattern. Then, the photoisomerization reaction arises in the irradiated part where the transfer to the trans-type chelate coordinate molecules a rises to release the metallic ions 3 and to permit the recording of information. Monitor light 10 is then irradiated to a record ing medium and the change in the absorption of the light is read from transmitted light 9, 9' by which the recording is reproduced. |
