{"id":5152,"date":"2026-04-13T08:11:27","date_gmt":"2026-04-12T23:11:27","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=5152"},"modified":"2026-04-13T08:11:29","modified_gmt":"2026-04-12T23:11:29","slug":"what-is-secm-scanning-electrochemical-microscopy-a-simple-explanation-of-how-it-works-and-its-features-and-history","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=5152","title":{"rendered":"What is SECM (scanning electrochemical microscopy)? A simple explanation of how it works and its features and history!"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6-1024x576.jpg\" alt=\"\" class=\"wp-image-5153\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6-1024x576.jpg 1024w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6-300x169.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6-768x432.jpg 768w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6-1536x864.jpg 1536w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic1-6.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>SECM (scanning electrochemical microscopy) is a type of SPM (scanning probe microscopy).<\/p>\n\n\n\n<p>If you would like to know more about SPM, please read the following article, which also explains it.<\/p>\n\n\n<div class=\"related_link\"><span class=\"title\"><i class=\"fa-solid fa-bookmark\"><\/i>Read in conjunction with<\/span><ul><li><a href=\"https:\/\/agus.co.jp\/en\/?p=5038\"><span class=\"thumbnail\"><img decoding=\"async\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/01\/pic1-3.jpg\"><\/span><span class=\"post_title\">What is a scanning probe microscope (SPM)? An explanation of types, uses in society and history<\/span><\/a><\/li><\/ul><\/div>\n\n\n\n<p>This article will explain some examples of how SECMs work and the situations in which they are used.<\/p>\n\n\n\n<p>We are pleased to share insights that only those of us working with atoms on a daily basis can provide. We hope you find this information useful.<\/p>\n\n\n\n<p>Let&#8217;s look at it.<\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">SECM (scanning electrochemical microscopy) is a microscope that uses microelectrodes to make measurements.<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"723\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7-1024x723.jpg\" alt=\"\" class=\"wp-image-5155\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7-1024x723.jpg 1024w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7-300x212.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7-768x542.jpg 768w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7-1536x1085.jpg 1536w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic2-7.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>SECM (scanning electrochemical microscopy) is a microscope that uses microelectrodes as probing needle to obtain reaction images of chemicals on the surface of a sample and quantification of reaction rates.<\/p>\n\n\n\n<p>SECM is a type of SPM (scanning probe microscopy), mainly used in genres ranging from corrosion protection chemistry to enzyme stability studies.<\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Example of structure of SECM (Scanning Electrochemical Microscopy)<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic3-7-1024x576.jpg\" alt=\"\" class=\"wp-image-5156\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic3-7-1024x576.jpg 1024w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic3-7-300x169.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic3-7-768x432.jpg 768w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic3-7.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br><\/p>\n\n\n\n<p>Left\uff1aConstant height mode<br>Right\uff1aConstant Distance Mode<\/p>\n\n\n\n<p>There are several modes of SECM. Here, we will look at an example in the &#8216;probe scanning method&#8217;, which is easy to compare with other SPMs.<\/p>\n\n\n\n<p>The SECM probe scanning method has two modes.<\/p>\n\n\n\n<p>\u30fbConstant height mode: Relatively simple to perform (no special electrodes or feedback control required)<\/p>\n\n\n\n<p>\u30fbConstant Distance Mode\uff1aClose to tens of nanometers for high resolution and contrast imaging<\/p>\n\n\n\n<p>The most commonly used measurement is the relatively simple &#8216;constant height mode&#8217;.<\/p>\n\n\n\n<p>Constant height mode is a method of measuring surface topography by maintaining a constant height between the electrode and the sample.<\/p>\n\n\n\n<p>However, there are weaknesses, such as the inability to accurately image irregularities unless the tip of the electrode is placed above the highest point in the imaging range.<\/p>\n\n\n\n<p>Therefore, constant distance mode is used if the user wants to obtain accurate geometry with higher resolution and to detect electrochemical activity at the same time.<\/p>\n\n\n\n<p>The constant distance mode is an electrical version of the conventional SPM method.<\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Real image samples from SECM (Scanning Electrochemical Microscopy).<\/h2>\n\n\n\n<p>SECM image obtained by scanning over a 100 micron diameter platinum disc electrode in ferrocene ammonium solution.<\/p>\n\n\n\n<p>The current in the platinum area is greater, so it is projected as a mountain.<\/p>\n\n\n\n<p>For a sample of the actual image, please see the following pages.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nda.ac.jp\/cc\/users\/hyamada\/Research\/Concept_of_SECM.html\">Principles of SECM (in Japanese)<\/a><br><\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">History of SECM (scanning electrochemical microscopy)<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4-1024x682.jpg\" alt=\"\" class=\"wp-image-5157\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4-1024x682.jpg 1024w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4-300x200.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4-768x512.jpg 768w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4-1536x1023.jpg 1536w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/04\/pic4-4.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Microelectrode measurements have been made since around 1980.<\/p>\n\n\n\n<p>Then, developing the SPM technique, the SECM is reported by A.J. Bird et al. in 1989.<\/p>\n\n\n\n<p>With its SPM aspect and electrochemical measurement aspect, the SECM has become one of the microscopes that continue to be used in recent years.<\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<p>We talked about SECM (scanning electrochemical microscopy).<\/p>\n\n\n\n<p>Finally, let&#8217;s look back at the key points.<\/p>\n\n\n\n<p>\u30fbSECM (scanning electrochemical microscopy) is a microscope that uses microelectrodes to make measurements.<\/p>\n\n\n\n<p>\u30fbSECM probe scanning methods include &#8216;constant height mode&#8217; and &#8216;constant distance mode&#8217;.<\/p>\n\n\n\n<p>\u30fbSECM was developed in 1989 with the development of SPM and is still in use today.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>We mentioned at the beginning that SECM is a type of SPM (scanning probe microscope).<\/p>\n\n\n\n<p>For more information on SPM, see also the following article.<br><\/p>\n\n\n<div class=\"related_link\"><span class=\"title\"><i class=\"fa-solid fa-bookmark\"><\/i>Read in conjunction with<\/span><ul><li><a href=\"https:\/\/agus.co.jp\/en\/?p=5038\"><span class=\"thumbnail\"><img decoding=\"async\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2026\/01\/pic1-3.jpg\"><\/span><span class=\"post_title\">What is a scanning probe microscope (SPM)? An explanation of types, uses in society and history<\/span><\/a><\/li><\/ul><\/div>\n","protected":false},"excerpt":{"rendered":"<p>SECM (scanning electrochemical microscopy) is a type of SPM (scanning probe[\u3082\u3063\u3068\u8aad\u307e\u305b\u3066\u301c]<\/p>\n","protected":false},"author":1,"featured_media":5153,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology-explanation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is SECM (scanning electrochemical microscopy)? 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