A discovery in the field of nanofluidics could shake up our understanding of molecular behavior on the tiniest scales. Research teams at EPFL and the University of Manchester have revealed a previously hidden world by using the newly found fluorescent properties of a graphene-like 2D material, boron nitride. This innovative approach enables scientists to track individual molecules within nanofluidic structures, illuminating their behavior in ways never before possible.
Nanofluidics, the study of fluids confined within ultra-small spaces, offers insights into the behavior of liquids on a nanometer scale. However, exploring the movement of individualin such confined environments has been challenging due to the limitations of conventional microscopy techniques. This obstacle prevented real-time sensing and imaging, leaving significant gaps in our knowledge of molecular properties in confinement.
This newfound understanding of molecular properties has exciting applications, including the potential to directly image emerging nanofluidic systems, where liquids exhibit unconventional behaviors under pressure or voltage stimuli. The research's core lies in the fluorescence originating from single-photon emitters at the hexagonal"This fluorescence activation came unexpectedly, as neither hBN nor the liquid exhibit visible-range fluorescence on their own.
Using a combination of microscopy techniques, the team monitored color changes and demonstrated that these light emitters release photons one at a time, offering pinpoint information about their immediate surroundings within around one nanometer. This breakthrough enables the use of these emitters as nanoscale probes, shedding light on the arrangement of molecules within confined nanometer spaces.
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