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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Quantifying the Spatial Distribution of Radiative Heat Transfer in Subwavelength Planar Nanostructures
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Nonlinear Optical Processes in Centrosymmetric Systems by Cavity-Induced Symmetry Breaking
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Demonstration of Thermoradiative Power Generation Using Compensated Infrared Rectennas
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Quantum Sensing of Paramagnetic Spins in Liquids with Spin Qubits in Hexagonal Boron Nitride
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Coupling into Hyperbolic Carbon-Nanotube Films with a Deep-Etched Antenna Grating
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Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate
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Electro-Absorptive Quantum Dot Antenna Resolves Terahertz Lightwaves via Biased Stark Effect
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Plug-and-Play Molecular Approach for Room Temperature Polariton Condensation
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Energy Cascade in Halide Perovskite-Multiple Chromophore Films: Direct versus Mediated Transfer
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Electrically Tunable Topological Singularities in Excitonic Two-Dimensional Heterostructures for Wavefront Manipulation
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Strong Coupling and Single-Photon Nonlinearity in Free-Electron Quantum Optics
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Development of Lipid-Coated Semiconductor Nanosensors for Recording of Membrane Potential in Neurons
In the past decade, optical imaging methods have significantly improved our understanding of the information processing principles in the brain. Although many promising tools have been designed, sensors of membrane potential are lagging behind the rest. Semiconductor nanoparticles are an attractive alternative to classical voltage indicators, such as voltage-sensitive dyes and proteins. Such nanoparticles exhibit high sensitivity to external electric fields via the quantum-confine Stark effect. Here we report the development of semiconductor voltage-sensitive nanorods (vsNRs) that self-insert into the neuronal membrane. To facilitate interaction of the nanorods with the membrane, we functionalized their surface with the lipid mixture derived from brain extract. We describe a workflow to detect and process the photoluminescent signal of vsNRs after widefield time-lapse recordings. We also present data indicating that vsNRs are feasible for sensing membrane potential in neurons at a single-particle level. This shows the potential of vsNRs for the detection of neuronal activity with unprecedentedly high spatial and temporal resolution.