{"id":493,"date":"2025-07-23T01:39:10","date_gmt":"2025-07-23T01:39:10","guid":{"rendered":"https:\/\/snowhouse.ca\/produit\/ac-secm-secm470-alternative-current-scanning-electrochemical-microscope-system\/"},"modified":"2025-11-14T15:23:30","modified_gmt":"2025-11-14T15:23:30","slug":"ac-secm-secm470-alternative-current-scanning-electrochemical-microscope-system","status":"publish","type":"product","link":"https:\/\/snowhouse.ca\/fr\/produit\/material-characterization\/scanning-electrochemical-workstation\/ac-secm-secm470-alternative-current-scanning-electrochemical-microscope-system\/","title":{"rendered":"AC\/DC-SECM \u2013 M470"},"content":{"rendered":"

Le module SECM470 inclut en standard les modules SECM \u00e0 courant continu (CC) et \u00e0 courant alternatif (CA).<\/h3>\n

Effectuez des mesures de microscopie \u00e9lectrochimique \u00e0 balayage \u00e0 hauteur constante sur le M470 modulaire de BioLogic avec l'option SECM470.<\/p>\n

\u00a0<\/em><\/p>\n

La technique d'\u00e9lectrochimie \u00e0 sonde \u00e0 balayage la plus polyvalente<\/h3>\n

La microscopie \u00e9lectrochimique \u00e0 balayage (SECM) est une technique d'\u00e9lectrochimie \u00e0 sonde de balayage permettant de mesurer l'activit\u00e9 d'un \u00e9chantillon avec une s\u00e9lectivit\u00e9 chimique. Sa polyvalence en fait la technique la plus populaire de cette famille. Le module SECM470 int\u00e8gre en standard les modes SECM \u00e0 courant continu (CC) et \u00e0 courant alternatif (CA), offrant ainsi aux chercheurs une flexibilit\u00e9 maximale dans leurs exp\u00e9riences. Le SECM470 effectue les mesures SECM en mode hauteur constante. Pour les mesures SECM \u00e0 distance constante,\u00a0ic-SECM470\u00a0<\/strong><\/a>Ce module devrait \u00eatre pris en compte.<\/p>\n

 <\/p>\n

La microscopie \u00e9lectrochimique \u00e0 balayage (SECM) est l'une des techniques d'\u00e9lectrochimie \u00e0 sonde \u00e0 balayage les plus largement utilis\u00e9es. Elle est employ\u00e9e en recherche sur les mat\u00e9riaux, notamment pour \u00e9tudier les mat\u00e9riaux 2D de derni\u00e8re g\u00e9n\u00e9ration et les alliages m\u00e9talliques. En catalyse, la SECM a permis le criblage \u00e0 haut d\u00e9bit de nouvelles chimies catalytiques. Des recherches similaires ont \u00e9t\u00e9 men\u00e9es dans le domaine des biocapteurs. En biologie, la SECM a \u00e9t\u00e9 utilis\u00e9e pour analyser des \u00e9chantillons allant de la cellule unique \u00e0 la plante enti\u00e8re. Son utilisation dans la recherche sur les batteries est en pleine expansion, avec de nombreuses applications telles que l'\u00e9tude de l'interface \u00e9lectrolyte solide, la mesure des \u00e9lectrolytes solides et l'\u00e9tude des r\u00e9actions aux \u00e9lectrodes. La SECM peut m\u00eame remplacer les mesures d'\u00e9lectrochimie classiques pour une \u00e9tude pr\u00e9cise de la cin\u00e9tique \u00e9lectrochimique.<\/p>\n

\"\"<\/a><\/p>\n

Mesure SECM d'une feuille de plante araign\u00e9e vivante dans du KCl 0,1 mM. Sonde Pt de 1 \u00b5m polaris\u00e9e \u00e0 -0,75 V.<\/strong><\/p>\n

Aper\u00e7u : Cartographie polyvalente haute r\u00e9solution de l'activit\u00e9 des \u00e9chantillons<\/h3>\n
    \n
  • Large choix d'accessoires<\/li>\n
  • Haute r\u00e9solution<\/li>\n
  • Contrairement \u00e0 d'autres microscopies \u00e0 sonde \u00e0 balayage, l'utilisation d'un m\u00e9diateur redox conf\u00e8re une s\u00e9lectivit\u00e9 chimique \u00e0 la mesure.<\/li>\n<\/ul>\n

    \u00c9tudier l'activit\u00e9 locale sans m\u00e9diateur redox \u00e0 l'aide de la technique ac-SECM<\/h3>\n

    Le SECM470 int\u00e8gre en standard les modes dc-SECM et ac-SECM. Contrairement au dc-SECM, l'ac-SECM permet d'\u00e9tudier l'activit\u00e9 locale d'une surface sans recourir \u00e0 un m\u00e9diateur redox ni \u00e0 un sel \u00e9lectrolytique. Cette caract\u00e9ristique en fait une technique tr\u00e8s performante, car elle permet de r\u00e9aliser des mesures dans un syst\u00e8me plus proche des conditions r\u00e9elles. L'ac-SECM est utilis\u00e9e dans l'\u00e9tude de la corrosion, car elle ne n\u00e9cessite pas l'emploi d'esp\u00e8ces susceptibles d'inhiber ou d'acc\u00e9l\u00e9rer la corrosion d'une surface. Elle est \u00e9galement employ\u00e9e en biologie, car elle permet d'utiliser un syst\u00e8me non toxique pour les cellules vivantes. L'ac-SECM peut s'av\u00e9rer particuli\u00e8rement utile pour les syst\u00e8mes o\u00f9 le choix d'un m\u00e9diateur redox appropri\u00e9 n'est pas \u00e9vident, comme c'est le cas pour les \u00e9lectrolytes organiques.<\/p>\n

     <\/p>\n

    Mesurer les conducteurs, les semi-conducteurs et m\u00eame les isolants<\/h3>\n

    La plupart des mesures \u00e9lectrochimiques par balayage, et m\u00eame certaines microscopies \u00e0 sonde \u00e0 balayage, n\u00e9cessitent un \u00e9chantillon conducteur ou semi-conducteur. De plus, cet \u00e9chantillon doit \u00eatre connect\u00e9 \u00e0 l'\u00e9lectronique du syst\u00e8me, ce qui limite les \u00e9chantillons pouvant \u00eatre mesur\u00e9s. La microscopie \u00e9lectrochimique \u00e0 balayage (SECM), en revanche, permet de mesurer des \u00e9chantillons conducteurs, semi-conducteurs, voire isolants, sans qu'il soit n\u00e9cessaire de les connecter \u00e0 l'\u00e9lectronique du syst\u00e8me. Comme la SECM ne requiert pas d'\u00e9chantillon actif, elle peut \u00eatre utilis\u00e9e pour mesurer une large gamme d'\u00e9chantillons, des cellules vivantes aux m\u00e9taux en corrosion, ce qui lui conf\u00e8re un champ d'application inaccessible aux autres mesures \u00e9lectrochimiques par balayage.<\/p>\n

    Mesures SECM par balayage ou par balayage pas \u00e0 pas<\/h3>\n

    L'utilisation du SECM470 (microscope \u00e9lectronique \u00e0 balayage en courant continu) peut se faire en mode pas \u00e0 pas ou en mode balayage continu. En mode balayage continu, la sonde se d\u00e9place en continu pendant la mesure, ce qui la rend plus rapide qu'en mode pas \u00e0 pas. Le balayage continu permet d'utiliser le SECM470 pour mesurer des \u00e9chantillons dynamiques et variables.<\/p>","protected":false},"excerpt":{"rendered":"

    Courant continu (CC) - SECM et courant alternatif (CA) - SECM<\/p>","protected":false},"featured_media":494,"template":"","meta":[],"product_brand":[550],"product_cat":[84],"product_tag":[],"document":[],"class_list":{"0":"post-493","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-biologic","7":"product_cat-scanning-electrochemical-workstation","9":"first","10":"instock","11":"purchasable","12":"product-type-simple"},"yoast_head":"\nac\/dc-SECM - M470 - SnowHouse<\/title>\n<meta name=\"description\" content=\"A versatile technique that can be used in a wide variety of applications including: materials research, catalysis, battery research and many others...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/snowhouse.ca\/fr\/product\/material-characterization\/scanning-electrochemical-workstation\/ac-secm-secm470-alternative-current-scanning-electrochemical-microscope-system\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ac\/dc-SECM - 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