BLUE LIGHT EMITTING DIODE FOR FLUORESCENCE SENSING
BLUE LIGHT EMITTING DIODE FOR FLUORESCENCE SENSING
批准号:
6444720
负责人:
GOVIND RAO
金额:
$29.31万
依托单位国家:
美国
项目类别:
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-04-01 至 2002-03-31
中文摘要
我们已经产生了幅度调制的近紫外线,
以390 nm为中心,使用廉价的商用蓝色
发光二极管(LED)。标准品的荧光寿命
使用相位在频域中测量荧光团
调制技术,产生的荧光寿命符合
那些在文献中报道的。能够将LED调制为
高频,加上紫外线输出,允许将其用作
廉价的紫外光光源在荧光寿命中的光学
传感器,甚至频域荧光仪。
英文摘要
We have produced amplitude-modulated near-ultraviolet light,
centered at 390 nm, using an inexpensive, commercially available blue
light emitting diode (LED). The fluorescence lifetimes of standard
fluorophores were measured in the frequency -domain using the phase
modulation technique, producing fluorescence lifetimes that agree with
those reported in the literature. The ability to modulate the LED at
high frequencies, along with the UV output, allows its use as an
inexpensive UV light source in the fluorescence lifetime optical
sensors and even frequency-domain fluorometers.
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海外基金