Carbon nanotube fabrication heater

Fri, 24 Jul 2026 11:34:31 +0800

Why we switched to IR heating for CNTs

When you’re growing carbon nanotubes, everything comes down to heat. If your thermal control is off, your catalyst doesn’t activate, and your carbon deposition fails. Simple as that. For a long time, everyone just used traditional resistive furnaces. But those things are basically giant ovens that waste a ton of energy heating up air you don’t even need. We decided to ditch them for shortwave infrared (IR) systems instead. Speed is everything. Here’s the thing: the quality of your nanotube forest depends on how fast you ramp up the temperature. With IR lamps, the heat is radiant. It hits the target directly. We’ve tuned these systems for high power density, which means we hit our target temperatures in seconds. Not minutes. Seconds. It makes the whole process feel snappier and cuts down the energy draw per wafer. Your thermal footprint just shrinks. Getting the waveband right We use quartz-halogen tech to keep the energy in the shortwave spectrum. Why? Because shortwave IR actually sinks into the substrate. Longwave heat just bounces around or sits on the surface. This lets the catalyst layer get hot enough to work without turning the entire reactor housing into a furnace. We sometimes use coated quartz to fine-tune that emission. It costs a bit more upfront, and you have to be careful not to scratch the surface, but it’s worth it for the precision. The real-world trade-offs Now, it’s not all plug-and-play. You have to rethink your shielding. Since IR lamps create such intense, localized heat, your cooling jackets need to be up to the task. If you skimp on the cooling, you’ll start seeing your temperature setpoints drift, and that’s where the headaches start. But once you’ve got that dialed in, these units just slide right into existing fab lines. You stop wasting time on “soak time”—that annoying period where you’re just waiting for a big oven to get warm. It’s just basic physics. Less wasted heat means a cleaner, greener factory.

Carbon fiber infrared lamp fab

Thu, 09 Jul 2026 05:16:22 +0800

How High-Purity Quartz Infrared Lamps Keep Cleanrooms Truly Clean

We built these carbon fiber infrared lamps for the one place that has zero patience for compromise: the Class 100 cleanroom. If your process can’t tolerate any outgassing, no shedding of particles, and absolutely no film building up on surfaces, the lamp has to be designed right down to the glass itself.

Power, Voltage, and Shape—Why It All Matters

At the heart of this lamp is a shortwave infrared emitter wrapped in high-purity quartz. We run it at 400V instead of 230V because higher voltage drops the current for the same wattage. And lower current means less energy lost to resistance in the terminals, and less voltage drop over long wire runs—handy when you’re wiring up whole banks of lamps across a production line. The 300mm tube length isn’t random. It focuses the radiant heat into a tight zone, giving you serious watt density per square inch without forcing you to redesign the whole machine footprint. At 2500W, it’s got enough punch to respond fast. That’s a good thing, but it also means your machine’s cooling and airflow need to be up to the task, so components stay within spec.

Carbon on Infrared Quartz Heating Systems

Carbon nanotube fabrication heater

Why we switched to IR heating for CNTs

Carbon fiber infrared lamp fab

How High-Purity Quartz Infrared Lamps Keep Cleanrooms Truly Clean

Power, Voltage, and Shape—Why It All Matters