A Sharpie pen being held up by a two inch square block of aerogel (also called "solid smoke" or "frozen smoke"). Note that the absorption and scattering properties of the aerogel make it look hazy blue against the black background, and slightly yellow against the paper. The aerogel block here weighs approximately 500 milligrams.
Sleek metal barrel for an eye-catching, premium look Gel pen with no smear, no bleed technology Intensely bold gel ink colors offer always-vivid
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Experience a high-performance gel pen with the Sharpie S-Gel. With no smear, no bleed technology, this Sharpie pen delivers an exceptional writing
Sharpie S-Gel Pen, Retractable, Medium 0.7mm, Blue Ink, 2/pack
Polyimide Aerogels as Lightweight Dielectric Insulators for Carbon
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Flexible electrodes and supercapacitors for wearable energy
SHARPIE S-GEL METAL BLUE BARREL 0.7MM BLK- 2CT