Carbon nanotube fabrication heater

Fri, 26 Jun 2026 01:40:35 +0800

Out on the fab floor, yield comes down to degrees—plain and simple. A 0.5°C drift during photoresist soft bake, or a cold spot across the wafer during cure, can throw off critical dimensions, spike particle counts, and turn good die into scrap. We built our carbon nanotube fabrication heaters to take that thermal guesswork out of the process. What matters under the hood We went with a carbon nanotube heating element because it responds fast, stays localized, and holds stable emissivity—paired with short-wave infrared (NIR) to couple energy efficiently. The payoff is wafer-level uniformity within ±0.1°C across the active zone, and setpoint repeatability of ±0.2°C. Ramp control keeps you inside tight thermal budgets without overshoot, and hold stability holds up through long bake and cure windows. The design generates zero particles and fits cleanroom Class 1–100. Closed-loop sensing keeps it running shift after shift, with no surprise downtime. Why this plays in lithography and beyond In lithography, you need a consistent soft bake to hit the right photoresist viscosity and drive out solvent; in hard bake, you need repeatable crosslinking so the pattern stays intact. Our heaters deliver the uniformity and repeatability that keep CD control in spec and cut down edge-bead variability. Wafer drying comes out cleaner and drier, with fewer surface defects and less rework. Fast response shortens cycle time, and the efficient NIR profile lowers energy draw per batch. Process windows open up, scrap drops, and maintenance intervals stretch out. What you need to plan for The carbon nanotube heater needs a dedicated power and control interface that matches your equipment footprint and safety interlocks. Expect a short commissioning window to tune ramp profiles to your photoresist stack and substrate stack. The system is solid, but you still have to verify thermal coupling to the chuck and chamber on your specific tool—otherwise you won’t hold the stated uniformity. Once you get it aligned, the process stays stable. Shifts happen only when you decide to make them.

Nanotube on Your Quartz Heater Source

Carbon nanotube fabrication heater