ArticleACS nano2024
Highly Localized Chemical Sampling at Subsecond Temporal Resolution Enabled with a Silicon Nanodialysis Platform at Nanoliter per Minute Flows.
Article in ACS nano, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- An opto-microperfusion neural probe for multiplexed detection of optogenetically evoked neurochemical release dynamics.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Local Chemical Gradients in a Mammalian Cortex Measured In Vivo With a Silicon Nanodialysis Mass Spectrometry Platform.Angewandte Chemie (International ed. in English) · 2026Article
- Region-specific proteomic profiling of brain interstitial fluidLab on a chip · 2026Article
- Nanophotonic neural probes for in vivo photostimulation, electrophysiology, and microfluidic delivery.Microsystems & nanoengineering · 2026Article
- Sampling Probes Microfabricated from Parylene‑C for In Vivo Neurochemical Monitoring.ACS measurement science au · 2025Article
- Neuropeptides in the Extracellular Space of the Mouse Cortex Measured In Vivo by Nanodialysis Probe Coupled with LC-MS.Angewandte Chemie (International ed. in English) · 2025Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Microdialysis (MD) is a versatile and powerful technique for chemical profiling of biological tissues and is widely used for quantification of neurotransmitters, neuropeptides, metabolites, biomarkers, and drugs in the central nervous system as well as in dermatology, ophthalmology, and pain research. However, MD performance is severely limited by fundamental tradeoffs between chemical sensitivity, spatial resolution, and temporal response. Here, by using wafer-scale silicon microfabrication, we develop and demonstrate a nanodialysis (ND) sampling probe that enables highly localized chemical sampling with 100 μm spatial resolution and subsecond temporal resolution at high recovery rates. These performance metrics, which are 100-1000× superior to existing MD approaches, are enabled by a 100× reduction of the microfluidic channel cross-section, a corresponding drastic 100× reduction of flow rates to exceedingly slow few nL/min flows, and integration of a nanometer-thin nanoporous membrane with high transport flux into the probe sampling area. Miniaturized ND probes may allow for the minimally invasive and highly localized sampling and chemical profiling in live biological tissues with high spatiotemporal resolution for clinical, biomedical, and pharmaceutical applications.
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Registered trials
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