{"id":238385,"date":"2026-06-05T02:16:40","date_gmt":"2026-06-05T07:16:40","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/06\/new-x-ray-method-captures-solid-liquid-interfaces-and-bulk-liquids-simultaneously"},"modified":"2026-06-05T02:16:40","modified_gmt":"2026-06-05T07:16:40","slug":"new-x-ray-method-captures-solid-liquid-interfaces-and-bulk-liquids-simultaneously","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/06\/new-x-ray-method-captures-solid-liquid-interfaces-and-bulk-liquids-simultaneously","title":{"rendered":"New X-ray method captures solid-liquid interfaces and bulk liquids simultaneously"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-x-ray-method-captures-solid-liquid-interfaces-and-bulk-liquids-simultaneously3.jpg\"><\/a><\/p>\n<p>Researchers have developed a method for making simultaneous soft X-ray absorption spectroscopy (XAS) measurements of solid-liquid interfaces and bulk liquids. By controlling the thickness of the liquid layer, they obtained the O K-edge XAS spectrum of bulk H<sub>2<\/sub>O from a liquid H<sub>2<\/sub>O layer on a thin Au film using the transmission method, and they used the electron-yield method to obtain the XAS spectrum of the H<sub>2<\/sub>O\/Au interface by measuring the drain currents from the Au surface following soft X-ray absorption. This method for obtaining simultaneous XAS measurements of solid-liquid interfaces and bulk liquids can be utilized to investigate the mechanisms of a variety of catalytic, electrochemical, and biological reactions involving solid-liquid interfaces.<\/p>\n<p>Water molecules at solid-liquid interfaces play important roles in various catalytic, electrochemical, and biological reactions. <a href=\"https:\/\/phys.org\/news\/2025-12-enigmatic-surface-ray-snapshots-reveal.html?utm_source=embeddings&utm_medium=related&utm_campaign=internal\" rel=\"related\">Soft X-ray absorption spectroscopy<\/a> (XAS) is an element-specific method for investigating the electronic structures of liquid water and organic molecules. In this study, the researchers developed a method for simultaneously obtaining XAS measurements of a solid-liquid interface, using the electron-yield method, and of the bulk liquid, using the transmission method. The paper is <a href=\"https:\/\/journals.iucr.org\/paper?S1600577526004637\" target=\"_blank\">published<\/a> in the Journal of Synchrotron Radiation.<\/p>\n<p>In the present work, they measured the XAS spectra while precisely controlling the thickness of the liquid layer in the range from 20 nm to 40 \u03bcm in a liquid cell for the transmission of soft X-rays. The XAS spectra acquired in transmission mode are derived mainly from the bulk liquid because the contributions from the solid-liquid interfaces are smaller than those from the bulk liquid. In contrast, the XAS spectra of solid-liquid interfaces are obtained by detecting Auger electrons, which originate mostly from those interfaces because they escape only from shallow depths.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers have developed a method for making simultaneous soft X-ray absorption spectroscopy (XAS) measurements of solid-liquid interfaces and bulk liquids. By controlling the thickness of the liquid layer, they obtained the O K-edge XAS spectrum of bulk H2O from a liquid H2O layer on a thin Au film using the transmission method, and they used [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,19],"tags":[],"class_list":["post-238385","post","type-post","status-publish","format-standard","hentry","category-biological","category-chemistry"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/238385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=238385"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/238385\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=238385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=238385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=238385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}