The atomizer is the heating component inside a cannabis vape cartridge or pen. It contains the wick, coil, and heating element that transforms oil into vapor when activated. When the battery engages, the metal coil heats up, vaporizing oil that has been absorbed by the wick. Well-constructed atomizers evenly heat oil across the wick at temperate between 350°F and 450°F to produce clean, flavorful vapor. Common materials include ceramic, quartz, or cotton wicks wrapped with wire coils. Ceramic and quartz atomizers tend to heat more evenly and retain heat well compared to cotton wicks, which can burn more readily if overheated. Troubleshooting atomizer issues may involve cleaning debris from the coil, trying thicker oil, or replacing the entire component. Overall, a quality atomizer is critical for transforming cannabis oil into smooth, pure vapor.