A thyristor will stay conducting until the current through the device is zero (“current zero”) or perhaps slightly negative. LLNL’s approach is to use the opticondistor (“OTV”) to force this current zero in order to force the device into an “off” state. By combining a light-activated thyristor with an OTV, a noise-immune, high efficiency, high-power switching device can be constructed. The…
Keywords
- Show all (67)
- Synthesis and Processing (16)
- Electric Grid (8)
- Materials for Energy Products (7)
- Additive Manufacturing (6)
- Carbon Utilization (6)
- 3D Printing (4)
- Material Design (4)
- Direct Air Capture (2)
- Membranes (2)
- Power Electronics (2)
- Additively Manufactured (AM) Optics (1)
- Geologic Storage (1)
- Inertial Fusion Energy (IFE) (1)
- Magnet Compositions (1)
- Material Characterization (1)
- Simulation (1)
- Spectrometers (1)
- Structural Materials (1)
- (-) Photoconductive Semiconductor Switches (PCSS) (1)
- (-) Semiconductors (1)
Image
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…
Image
Dubbed the "LLNL Chemical Prism", the LLNL system has use wherever there is a need to separate components of a fluid. A few examples include:
- Chemical detection for known and previously unknown chemicals or substances
- Separation of biomolecules from a cellular extract
- Fractionation of a complex mixture of hydrocarbons
- Forensic analysis of…