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Non\u2010invasive optical sensing would be significantly improved by a robust implementation of a reusable substrate that combines these techniques. Here, we present an electrochemically cleanable metamaterial that enables flow\u2010compatible real\u2010time SEIRA and SERS. This metamaterial facilitates the study of surface\u2010adsorbed species and diffusion layers, elicits spectral shifts from changes in nanogap refractive index of 1400\u00a0nm\/RIU, and delivers sensitive analyte detection. Combining SERS and SEIRA clarifies molecular (electro)chemical transformations and tracks changes in selection rules and symmetry breaking at the analyte\u2010electrode interface. This development in enhanced multimodal spectro\u2010electrochemistry is suited for multiple domains, including understanding charge transport mechanisms and interfacial dynamics at electrodes, and is capable of real\u2010time flow monitoring for a wide range of molecular processes.<\/jats:p>","DOI":"10.1002\/smll.76283","type":"journal-article","created":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T06:05:02Z","timestamp":1792044302000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Accessing Both Electrochemical SEIRA and SERS With Highly Sensitive Metamaterials for Enhanced Molecular Identification"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-8131-5230","authenticated-orcid":false,"given":"Nicolas","family":"Spiesshofer","sequence":"first","affiliation":[{"name":"NanoPhotonics Centre Cavendish Laboratory Department of Physics University of Cambridge  Cambridge 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