When it comes to semiconductor manufacturing, especially Molecular Beam Epitaxy (MBE), keeping the thermal environment stable is everything. If you want pure crystals and even layers, there’s just no way around it. At HL Cryogenics, we know the real challenge with Gallium Nitride (GaN) growth comes down to how well you control the delivery of liquid nitrogen (LN₂) to the cryoshrouds. It’s a game of precision—every drop has to be pure, sub-cooled liquid, right to the spot where it matters. If any gaseous nitrogen slips in—usually because of heat sneaking in during transfer—you get hot spots and “spitting” inside the MBE chamber. That’s bad news for GaN film quality.

This is where our Vacuum Insulated Phase Separator steps up. By putting it right at the end of the liquid nitrogen supply line, we catch and remove that gas flash before it can do any damage. The result? A steady, dense stream of liquid, exactly what you need. It works hand-in-hand with our Vacuum Insulated Pipe and Flexible Hose, which are both designed to keep outside heat from creeping in. The pipe uses advanced vacuum insulation and multilayer tech to hold in the cold, slashing liquid nitrogen loss compared to old-school foam pipe. And for spots where you need flexibility or have a tricky layout, our Vacuum Insulated Flexible Hose bends and moves without losing its insulation or safety.

To keep these vacuum levels rock-solid over the years, we rely on our Dynamic Vacuum Pump System. It’s always monitoring and maintaining pressure in the vacuum jacket, so the insulation never lets you down. For controlling flow, we use our precision-engineered Vacuum Insulated Valve. It stops thermal short-circuiting and ice buildup at the stem, and it gives you tight shut-off and accurate throttling, even at -196°C.