opals

n.

蛋白石，猫眼石，乳色玻璃（ opal的名词复数 ）；

Opals: status and prospects.
From Opals to Optics: Colloidal Photonic Crystals
Crystallization of opals from polydisperse nanoparticles.
Tunable Colors in Opals and Inverse Opal Photonic Crystals
The OPALS Major Trauma Study: impact of advanced life-support on survival and morbidity.
Tin Dioxide Opals and Inverted Opals: Near‐Ideal Microstructures for Gas Sensors
Existence of a photonic pseudogap for visible light in synthetic opals
U-Pb ages of uraniferous opals and implications for the history of beryllium, fluorine, and uranium mineralization at Spor Mountain,...
The Ontario Prehospital Advanced Life Support (OPALS) Study Part II: Rationale and Methodology for Trauma and Respiratory Distress P...
Effect of transport interval on out-of-hospital cardiac arrest survival in the OPALS study: implications for triaging patients to sp...