• 한국화재소방학회논문지
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• 제19권4호
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• pp.42-46
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• 2005

본 연구는 축광안료 혼입률 변화에 따른 축광세라믹스 시험체의 인광휘도 변화를 측정하였다. 측정결과 축광안료 혼입률에 비례해서 인광휘도는 증대하였다. 축광안료를 $20\%$이상 혼입한 시험체는 KS와 JIS의 안전표지판 규정값을 만족하였고 축광안료를 $50\%$ 홉입한 시험체는 규정값보다 10배나 높은 결과치를 얻었다. 축광세라믹스의 인광휘도는 도포횟수에 비례해서 증대하였으나 도포횟수가 비 이상이 되면 인광휘도의 상승은 나타나지 않았다. 축광세라믹스는 사용할 재료가 모두 무기재료이고, 광학적으로도 축광피난 유도표지로서 충분히 이용할 가치가 있는 재료라고 할 수 있다.

• 한국결정성장학회지
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• 제33권1호
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• pp.31-36
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• 2023

반려동물을 키우는 인구가 증가하고 있고 이에 따라 관련 산업의 규모 및 그 범위가 확대되고 있는 실정이다. 반려동물 악세서리에 대한 다양한 디자인, 기능, 재질 등에 대한 요구가 증대되고 있다. 이에 본 연구에서는 축광 안료를 활용한 반려동물 주얼리 디자인 개발을 제안하고자 한다. 축광 안료는 어두운 곳에서도 스스로 빛을 발산하는 장점을 가지고 있기에 이를 보석 형태의 레진으로 제작하고 반려동물을 위한 주얼리 디자인 개발에 적용하여 최종 디자인 방안을 도출하였다.

• 한국표면공학회지
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• 제56권2호
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• pp.152-159
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• 2023

The night visibility of pavement is being considered as a global issue in the field of traffic safety. Although the spreading glass beads on the lane paints has been mainly used to secure night-visibility by utilizing the effect of retroreflection, obvious shortcoming of this method is that retroflection does not occur in the range where the headlights do not reach the glass beads. The use of functional paints including phosphorescent constituents could be a solution for overcoming fore-mentioned problem. SrAl₂O₄ based chemicals have not only good phosphorescent property, but also are chemically stable compared to existing ZnS based materials. However, this chemicals also need the improvement due to slightly reduced luminous effect in time. Herein, we developed novel paints showing enhanced phosphorescent properties by putting rare earth elements such as Eu, Dy and Y into SrAl₂O₄. These prepared phosphorescent pigments have displayed improved properties in terms of durability and long afterglow. For instance, the property of afterglow has been persisted after 5 hours with luminace of 20.6 mcd/m².

• Fisheries and Aquatic Sciences
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• 제17권2호
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• pp.223-227
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• 2014

The present study examined whether light emitted by long-afterglow phosphorescent pigments (LumiNova) would stimulate gonadal development in fish during the nonbreeding season. Pellets containing LumiNova powder (treatment group) were prepared and placed on the calvaria of specimens of the sapphire devil Chrysiptera cyanea, a reef-associated damselfish that requires long days for gonadal recrudescence. A pellet without LumiNova powder was placed on the calvaria of the control fish (control group). Fish were reared at $26^{\circ}C$ under a light-dark cycle (12 h photophase, 12 h scotophase; LD 12:12) for 4 weeks. No difference in the gonadosomatic index (GSI) or ovarian histology was observed among the control, sham-operation, and treatment groups 1 week after the start of the experiment. After 4 weeks, the GSI of the control and sham-operation groups remained at low levels, and ovaries contained immature oocytes at the perinucleolus stage. In contrast, the treatment group exhibited significantly higher values of GSI as well as developed ovaries with fully vitellogenic oocytes. These results demonstrated that long-day conditions were produced by light emitted from the LumiNova pellets, thus stimulating ovarian development in the damselfish. Therefore, long-afterglow phosphorescent pigments can be used as an alternative to standard light sources for purposes of artificial stimulation of gonadal development in fish.