#geometric-blackness

2 articles · 4 raw sources · 1 inventory

Geometric Blackness — Shape-Based Light Trapping 2026-06-22

Geometric blackness is the principle of trapping light with shape rather than pigment: angled cavities catch incoming light in repeated reflections so a surface absorbs almost ever…

solar-thermal geometric-blackness light-trapping solar-absorber selective-surface biomimetic+2

Thesis: Geometric blackness on a direct solar adsorption bed face increases daily yield 2026-06-27

thesis geometric-blackness solar-adsorption-cooling v-groove ice-maker bed-geometry+1

Inventory

Experiment: geometric blackness on a direct solar adsorption bed face 2026-06-27

Geometric blackness (shape-based light trapping — V-groove / 60° cavities) has a genuine second application on the SUN-FACING FACE of a direct/intermittent solar adsorption ice-mak…

question superseded p3

Next: Researched (see thesis) — verdict CONTRADICTED as framed. Do NOT build the grooved-optical version. If the bed face is to be improved optically, use a spectrally-selective coating (α≥0.95, ε≈0.05); if face geometry is pursued at all, treat it as a bed heat-transfer test (developed area), not light trapping.

geometric-blackness solar-adsorption-cooling v-groove light-trapping bed-geometry experiment+1

Raw sources

Geometric Blackness — Shape-Based Light Trapping for Solar Absorbers · 2026-06-22
CN2091433U — Solar adsorption ice-maker with V-groove + selective absorber (patent) · 2026-06-27
Recent advances in solar thermal selective coatings (review) · 2026-06-27
V-groove effective absorptance and the matching emittance penalty (cavity physics) · 2026-06-27