利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN101535801A 用于光声检测器的振荡器元件 失效 - 放弃专利权

用于光声检测器的振荡器元件
摘要：
提供了一种用在光声检测器中的振荡器元件(10)，其用于检测样本混合物中样本的浓度。该光声检测器使用光束(11)来激发振荡器元件(10)的激发区域(25)附近的样本(15)的分子。这种激发导致该振荡器元件(10)的共振。该振荡器元件(10)包括压电材料(20)，用于在其被机械地扭曲时产生电压；和电极(21－24)，其至少部分地覆盖振荡器(10)的表面以用于寄存所产生的电压。所述激发区域(25)以这样的方式被布置：避免在激发区域(25)中的电极(21－24)被光束(11)加热。
摘要（英）：

An oscillator element (10) for use in a photo acoustic detector is provided for detecting a concentration of a sample in a sample mixture. The photo acoustic detector uses a light beam (11) for excitation of molecules of the sample (15) in proximity of an excitation area (25) of the oscillator element (10). The excitation results in resonance of the oscillator element (10). The oscillator element (10) comprises piezoelectric material (20) for generating a voltage when mechanically distorted and electrodes (21-24), at least partially covering a surface of the oscillator element (10) for registering the generated voltage. The excitation area (25) is arranged in such a way that heating of the electrodes (21-24) in the excitation area (25) by the light beam (11) is avoided.

0/0