LLNL researchers have developed a TDLAS-based, standalone, real-time gas analyzer in a small form-factor for continuous or single-point monitoring. The system can analyze multiple gases with ultra-high sensitivity (ppm detection levels) in harsh conditions when utilizing wavelength-modulation spectroscopy (WMS).
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![Small-angle X-ray scattering (SAXS) data of crosslinked polyelectrolyte membrane films formed under different equilibrium humidity conditions](/sites/default/files/styles/scale_exact_400x400_/public/2024-04/SAXS%20data%20of%20crosslinked%20polyelectrolyte%20membrane%20films.png?itok=1bIMOhqO)
LLNL researchers have developed a method to enhance the performance of polyelectrolyte membranes by using a humidity-controlled crosslinking process which can be applied to precisely adjust the water channels of the membrane.
![LLNL energy grid protection device](/sites/default/files/styles/scale_exact_400x400_/public/2023-10/LLNL%20energy%20grid%20protection%20device_0.png?itok=vpqzRY_R)
The approach is to leverage the fact that a momentary “load” equal to the power transmission line impedance, (Z0), during the transient can suppress its propagation. Z(0) is typically a fixed impedance of several hundred ohms based on the geometry of most single wire transmission lines.
So, an isolated self-powered opticondistor (OTV) system may provide an ultrafast method of…
![JFET Device Structure](/sites/default/files/styles/scale_exact_400x400_/public/2023-10/JFET%20device%20structure.png?itok=NRzXbnhk)
LLNL’s novel approach is to use diamond substrates with the desired donor (nitrogen) and acceptor (boron) impurities. In order to optically activate these deep impurities, the invention requires at least one externally or internally integrated light source. The initial exposure to light can set up the desired conduction current, after which the light source could be turned off. Even with…
![Tunneling Diode between two DSRDs](/sites/default/files/styles/scale_exact_400x400_/public/2023-10/TunnelingDiode.png?itok=DfeB26vp)
Instead of producing individual DSRDs and bonding them, Tunnel DSRD's entire stack structure is grown epitaxially on a n- or p-type silicon wafer, resulting in a novel, “monolithic” stacked DSRD. A tunnel diode is essentially a diode with very highly doped p and n regions such that the reverse breakdown voltage is 200 meV or lower.
![Schematic of 2P3C setup. Pump laser component is in red while probe laser component is denoted in blue.](/sites/default/files/styles/scale_exact_400x400_/public/2023-05/trace%20gas%20detection%20with%202P3C%20ring-down%20spectroscopy_0.jpg?itok=FcMiekn3)
LLNL’s novel approach combines 2-color spectroscopy with CRDS, a combination not previously utilized.
![Graphic of NMR](/sites/default/files/styles/scale_exact_400x400_/public/2020-05/graphic_of_nmr.png?itok=b2_MNmdk)
There are prominent technical challenges arising from spinning a battery on the order of kilohertz as required by magic angle spinning in order to obtain spectral resolution that are addressed and enable operando solid-state NMR. The operando NMR measurement allows for continuous monitoring of the battery components and of potential metastable states that may exist during…
![Second skin smart protection mechanism of responsive nanotube membranes against environmental threats](/sites/default/files/styles/scale_exact_400x400_/public/2023-07/Second%20Skin%20with%20high%20breathability.png?itok=YhZHST7k)
LLNL researchers have developed an alternative route to protective breathable membranes called Second Skin technology, which has transformative potential for protective garments. These membranes are expected to be particularly effective in mitigating physiological burden.
For additional information see article in Advanced Materials “Ultrabreathable and Protective Membranes with Sub-5…