# Accurate Optical Number Density Measurement of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mmultiscripts><mml:msub><mml:mi>CO</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mmultiscripts><mml:msub><mml:mi>CO</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mpresc

> Research article (Physical Review Applied, 2019) · cited 11× · AI/ML

**Wikidata**: [openalex:W2977105497](https://www.wikidata.org/wiki/openalex:W2977105497)  
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