{"id":1634,"date":"2021-10-21T15:10:37","date_gmt":"2021-10-21T06:10:37","guid":{"rendered":"http:\/\/tuat-chemphys.net\/?p=1634"},"modified":"2021-10-21T15:10:37","modified_gmt":"2021-10-21T06:10:37","slug":"%e3%82%b7%e3%83%aa%e3%82%b3%e3%83%b3%e5%85%89%e5%9b%9e%e8%b7%af%e3%81%a8%e3%82%b3%e3%83%90%e3%83%ab%e3%83%88%e9%87%91%e5%b1%9e%e3%82%92%e7%b5%84%e3%81%bf%e5%90%88%e3%82%8f%e3%81%9b%e3%81%9f%e8%b6%85","status":"publish","type":"post","link":"https:\/\/tuat-chemphys.net\/?p=1634","title":{"rendered":"\u30b7\u30ea\u30b3\u30f3\u5149\u56de\u8def\u3068\u30b3\u30d0\u30eb\u30c8\u91d1\u5c5e\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u8d85\u5c0f\u578b\u30d2\u30fc\u30bf Micro heater combining silicon optical circuit and cobalt metal"},"content":{"rendered":"\n<p>\u9077\u79fb\u91d1\u5c5e\u306e\u30b3\u30d0\u30eb\u30c8\u3092\u7a4d\u5c64\u3057\u305f\u30b7\u30ea\u30b3\u30f3\u5149\u5c0e\u6ce2\u8def\uff08Si\u30d7\u30e9\u30ba\u30e2\u30cb\u30c3\u30af\u5c0e\u6ce2\u8def\uff09\u306e\u5e450.4\u30de\u30a4\u30af\u30ed\u30e1\u30fc\u30c8\u30eb\u306e\u9818\u57df\u306b\u5149\u304c\u5230\u9054\u3057\u3001\u5438\u53ce\u3055\u308c\u305f\u5149\u306b\u3088\u3063\u3066243\u2103\u306b\u52a0\u71b1\u3067\u304d\u308b\u3053\u3068\u3092\u91d1\u5c5e\u306e\u62b5\u6297\u306e\u5909\u5316\u304b\u3089\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u307e\u3057\u305f\uff08\u6e05\u6c34\u7814\u7a76\u5ba4\uff09\u3002Shimizu Lab succeeded in measuring from the change in resistance of a metal that light reaches a region of 0.4 micrometers in width of a silicon optical waveguide (Si plasmonic waveguide) in which cobalt, a transition metal, is laminated, and can be heated to 243 \u00b0C by absorbed light.<\/p>\n\n\n\n<p class=\"has-text-align-center\">\uff5e\u5149\u96c6\u7a4d\u56de\u8def\u306e\u9ad8\u5bc6\u5ea6\u5316\u30fb\u9ad8\u901f\u5316\u30fb\u9ad8\u6a5f\u80fd\u5316\u306b\u5411\u3051\u3066\uff5e<\/p>\n\n\n\n<p class=\"has-text-align-center\">Toward Higher Density, Speed, and Functionality of Optical Integrated Circuits<\/p>\n\n\n\n<p>\u9077\u79fb\u91d1\u5c5e\u306eCo(\u30b3\u30d0\u30eb\u30c8)\u3092\u7a4d\u5c64\u3057\u305fSi(\u30b7\u30ea\u30b3\u30f3)\u5149\u5c0e\u6ce2\u8def\uff08Si\u30d7\u30e9\u30ba\u30e2\u30cb\u30c3\u30af\u5c0e\u6ce2\u8def\uff09\u306b\u5149\u304c\u5230\u9054\u3057\u3001\u5438\u53ce\u3055\u308c\u305f\u5149\u304c\u767a\u71b1\u3059\u308b\u969b\u306e\u6e29\u5ea6\u4e0a\u6607\u3092\u91d1\u5c5e\u306e\u62b5\u6297\u306e\u5909\u5316\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u660e\u3089\u304b\u306b\u3057\u307e\u3057\u305f\u3002\u30af\u30e9\u30b93R\u306e\u30ec\u30fc\u30b6\u30dd\u30a4\u30f3\u30bf\u30fc\u306e\u51fa\u529b\u3068\u540c\u7b49\u306e6.3 \u30df\u30ea\u30ef\u30c3\u30c8\u306e\u5149\u3092\u5165\u529b\u3057\u305f\u3068\u304d\u306b\u3001\u9577\u30558\u30de\u30a4\u30af\u30ed\u30e1\u30fc\u30c8\u30eb\u3001\u5e450.4\u30de\u30a4\u30af\u30ed\u30e1\u30fc\u30c8\u30eb\u306e\u9818\u57df\u306e\u6e29\u5ea6\u304c\u6700\u5927\u3067243\u2103 \u306b\u9054\u3059\u308b\u5c40\u6240\u52a0\u71b1\u30d2\u30fc\u30bf\u3092\u5b9f\u73fe\u3057\u3001\u3053\u308c\u307e\u3067\u5831\u544a\u3055\u308c\u305f\u6e29\u5ea6\u3092\u4e0a\u56de\u308a\u307e\u3057\u305f\u3002\u96fb\u5b50\u56de\u8def\u306e\u914d\u7dda\u3092\u5149\u5316\u3057\u305f\u5149\u914d\u7dda\u3084\u5149\u96c6\u7a4d\u56de\u8def\u306b\u304a\u3044\u3066\u5fc5\u9808\u3068\u306a\u308b\u8d85\u5c0f\u578b\u306e\u5149\u30b9\u30a4\u30c3\u30c1\u3068\u305d\u306e\u9ad8\u5bc6\u5ea6\u5316\u3001\u5149\u306e\u5f37\u5f31\u306e\u60c5\u5831\u3092\u4e00\u6642\u7684\u306b\u8a18\u61b6\u3059\u308b\u5149\u30e1\u30e2\u30ea\u306e\u5b9f\u73fe\u306b\u5411\u3051\u3066\u6709\u671b\u306a\u7814\u7a76\u6210\u679c\u3067\u3059\u3002\u307e\u305f\u3001\u30d0\u30a4\u30aa\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3001\u5316\u5b66\u306a\u3069\u306e\u5206\u91ce\u306b\u304a\u3051\u308blab-on-a-chip\u3084\u30aa\u30f3\u30c1\u30c3\u30d7\u5149\u30bb\u30f3\u30b5\u306a\u3069\u306e\u3078\u306e\u5fdc\u7528\u3082\u671f\u5f85\u3055\u308c\u307e\u3059\u3002We clarified the temperature rise when light reaches Si (silicon) optical waveguides (Si plasmonic waveguides) stacked with transition metal Co (cobalt) and the absorbed light generates heat by measuring the change in resistance of the metal. When 6.3 milliwatts of light, equivalent to the output of a Class 3R laser pointer, was input, a local heater with a length of 8 micrometers and a width of 0.4 micrometers reached a maximum temperature of 243 \u00b0C, exceeding the reported temperature. This is a promising research result for the realization of ultra-compact optical switches that are essential for optical wiring and optical integrated circuits in which the wiring of electronic circuits is converted to light, and optical memories that temporarily store information on the strength and weakness of light. Application to lab-on-a-chip and on-chip optical sensors in fields such as biotechnology and chemistry is also expected.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"810\" height=\"326\" data-attachment-id=\"1636\" data-permalink=\"https:\/\/tuat-chemphys.net\/?attachment_id=1636\" data-orig-file=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?fit=1773%2C714&amp;ssl=1\" data-orig-size=\"1773,714\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"20211021_01_02\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?fit=810%2C326&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?resize=810%2C326&#038;ssl=1\" alt=\"\" class=\"wp-image-1636\" srcset=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?resize=1024%2C412&amp;ssl=1 1024w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?resize=300%2C121&amp;ssl=1 300w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?resize=768%2C309&amp;ssl=1 768w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?resize=1536%2C619&amp;ssl=1 1536w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?w=1773&amp;ssl=1 1773w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_02.jpg?w=1620&amp;ssl=1 1620w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><figcaption>(\u5de6)Si\u5149\u5c0e\u6ce2\u8def\u306e\u4e00\u90e8\u306bCo\u3068\u96fb\u6c17\u62b5\u6297\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306e\u96fb\u6975\u3092\u5f62\u6210\u3057\u305f\u30d2\u30fc\u30bf\u3001\uff08\u53f3\uff09Si\u5149\u5c0e\u6ce2\u8def\u306b\u6cbf\u3063\u30668\u30de\u30a4\u30af\u30ed\u30e1\u30fc\u30c8\u30eb\u306e\u9577\u3055\u306b\u308f\u305f\u3063\u3066Co\u3092\u5f62\u6210\u3057\u305f\u767a\u71b1\u9818\u57df\u306e\u5149\u5b66\u9855\u5fae\u93e1\u5199\u771f\u3000Photomicrograph of a heater with Co and an electrode for measuring electrical resistance formed on a portion of the (left) Si optical waveguide and a heating region with Co formed along the (right) Si optical waveguide over a length of 8 micrometers<\/figcaption><\/figure>\n\n\n\n<p><em>\u672c\u7814\u7a76\u6210\u679c\u306f\u3001Sensors\u8a8c\uff082021\u5e7410\u67086\u65e5\u4ed8\uff09\u306b\u63b2\u8f09\u3055\u308c\u307e\u3057\u305f\u3002<\/em><br><em>\u8ad6\u6587\u540d\uff1a221 K Local Photothermal Heating in a Si Plasmonic Waveguide Loaded with a Co Thin Film<\/em><br><em>DOI\uff1a 10.3390\/s21196634<\/em><br><em>URL\uff1a\u00a0<a rel=\"noreferrer noopener\" href=\"https:\/\/www.mdpi.com\/1424-8220\/21\/19\/6634\" target=\"_blank\">https:\/\/www.mdpi.com\/1424-8220\/21\/19\/6634<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9077\u79fb\u91d1\u5c5e\u306e\u30b3\u30d0\u30eb\u30c8\u3092\u7a4d\u5c64\u3057\u305f\u30b7\u30ea\u30b3\u30f3\u5149\u5c0e\u6ce2\u8def\uff08Si\u30d7\u30e9\u30ba\u30e2\u30cb\u30c3\u30af\u5c0e\u6ce2\u8def\uff09\u306e\u5e450.4\u30de\u30a4\u30af\u30ed\u30e1\u30fc\u30c8\u30eb\u306e\u9818\u57df\u306b\u5149\u304c\u5230\u9054\u3057\u3001\u5438\u53ce\u3055\u308c\u305f\u5149\u306b\u3088\u3063\u3066243\u2103\u306b\u52a0\u71b1\u3067\u304d\u308b\u3053\u3068\u3092\u91d1\u5c5e\u306e\u62b5\u6297\u306e\u5909\u5316\u304b\u3089\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u307e\u3057\u305f\uff08\u6e05\u6c34\u7814\u7a76\u5ba4\uff09\u3002Shimizu Lab succeeded in measuring from the change in resistance of a metal that light reaches a region of 0.4<\/p>\n","protected":false},"author":2,"featured_media":1635,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[9],"tags":[14,16],"class_list":["post-1634","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-advanced-materials-creation","tag-measurement-devices"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2021\/10\/20211021_01_01.jpg?fit=1432%2C734&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":6478,"url":"https:\/\/tuat-chemphys.net\/?p=6478","url_meta":{"origin":1634,"position":0},"title":"Eco-friendly AgBiS\u2082 nanocrystals with photodetector performance. \u74b0\u5883\u306b\u3084\u3055\u3057\u3044AgBiS\u2082\u30ca\u30ce\u7d50\u6676\u3092\u958b\u767a\u3001\u5149\u96fb\u5b50\u30c7\u30d0\u30a4\u30b9\u306e\u672a\u6765\u306b\u671f\u5f85","author":"unet","date":"2025-08","format":false,"excerpt":"\u4eca\u5f8c\u306f\u3001\u30ca\u30ce\u7d50\u6676\u306e\u30b5\u30a4\u30ba\u5236\u5fa1\u6280\u8853\u306e\u958b\u767a\u3092\u9032\u3081\u3001\u74b0\u5883\u306b\u914d\u616e\u3057\u305f\u9ad8\u6027\u80fd\u5149\u96fb\u5b50\u30c7\u30d0\u30a4\u30b9\u306e\u5b9f\u73fe\u3092\u76ee\u6307\u3057\u307e\u3059\u3002Future work will focus on developing size control techniques for nanocrystals to realize environmentally friendly, high-performance optoelectronic devices.","rel":"","context":"In &quot;Research Topics&quot;","block_context":{"text":"Research Topics","link":"https:\/\/tuat-chemphys.net\/?cat=9"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/08\/image.png?fit=600%2C472&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/08\/image.png?fit=600%2C472&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/08\/image.png?fit=600%2C472&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":6688,"url":"https:\/\/tuat-chemphys.net\/?p=6688","url_meta":{"origin":1634,"position":1},"title":"\u539f\u5b50\u30b9\u30d4\u30f3\u306e\u6e2c\u5b9a\uff1a\u30bb\u30b7\u30a6\u30e0\u539f\u5b50\u3078\u306e\u65b0\u305f\u306a\u6d1e\u5bdf Measuring the Atomic Spins: New Insights into Cesium Atoms","author":"unet","date":"2025-09","format":false,"excerpt":"\u5438\u53ce\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u624b\u6cd5\u3001\u3053\u306e\u6280\u8853\u306f\u91cf\u5b50\u6280\u8853\u306e\u767a\u5c55\u3068\u5b9f\u7528\u5316\u306b\u91cd\u8981\u306a\u8ca2\u732e\u3092\u3059\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002The absorption monitoring method: This technology is expected to make important contributions to the development and practical application of quantum technologies.","rel":"","context":"In &quot;Research Topics&quot;","block_context":{"text":"Research Topics","link":"https:\/\/tuat-chemphys.net\/?cat=9"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/09\/image-1.png?fit=1117%2C660&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/09\/image-1.png?fit=1117%2C660&ssl=1&resize=350%2C200 1x, 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