{"id":218891,"date":"2025-07-28T08:05:49","date_gmt":"2025-07-28T13:05:49","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/07\/a-new-method-to-measure-ultrafast-relaxation-processes-in-single-molecules"},"modified":"2025-07-28T08:05:49","modified_gmt":"2025-07-28T13:05:49","slug":"a-new-method-to-measure-ultrafast-relaxation-processes-in-single-molecules","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/07\/a-new-method-to-measure-ultrafast-relaxation-processes-in-single-molecules","title":{"rendered":"A new method to measure ultrafast relaxation processes in single molecules"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/a-new-method-to-measure-ultrafast-relaxation-processes-in-single-molecules2.jpg\"><\/a><\/p>\n<p>Quantum stochastic rectification is a process observed in some physical systems, which entails the conversion of random quantum fluctuations (i.e., quantum noise) and a small oscillating signal, such as a weak alternating current or AC voltage, into a steady output (e.g., a direct current, or DC). This quantum effect has been previously reported in magnetic tunnel junctions that are driven by both quantum mechanics and randomness (i.e., stochastic processes).<\/p>\n<p>Researchers at the University of California\u2013Irvine recently showed that the quantum stochastic rectification observed in individual molecules can be leveraged to study their intrinsic relaxation dynamics. Their approach, outlined in a paper <a href=\"https:\/\/link.aps.org\/doi\/10.1103\/dqfn-y77k\" target=\"_blank\">published<\/a> in <i>Physical Review Letters<\/i>, could inform the future study of molecular dynamics and advance the measurement of rapid processes that take place in single molecules at the atomic scale.<\/p>\n<p>\u201cA few years ago, I served on a Ph.D. Advancement committee and the graduate student discussed his thesis research involving <a href=\"https:\/\/phys.org\/tags\/stochastic+processes\/\" rel=\"tag\" class=\"\">stochastic processes<\/a> in nm-scale magnetic tunnel junctions,\u201d Wilson Ho, senior author of the paper, told Phys.org. \u201cThe signal in his experiment was affected by the thermal noise and showed a transition when the driving frequency was varied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quantum stochastic rectification is a process observed in some physical systems, which entails the conversion of random quantum fluctuations (i.e., quantum noise) and a small oscillating signal, such as a weak alternating current or AC voltage, into a steady output (e.g., a direct current, or DC). This quantum effect has been previously reported in magnetic [\u2026]<\/p>\n","protected":false},"author":732,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,1617],"tags":[],"class_list":["post-218891","post","type-post","status-publish","format-standard","hentry","category-futurism","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/218891","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\/732"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=218891"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/218891\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=218891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=218891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=218891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}