Development and characterisation of a compact light-addressable potentiometric sensor (LAPS) based on the digital light processing (DLP) technology for flexible chemical imaging
Development and characterisation of a compact light-addressable potentiometric sensor (LAPS) based on the digital light processing (DLP) technology for flexible chemical imaging
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DOI：
10.1016/j.snb.2010.12.003
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发表时间：
2012-07-31
影响因子：
8.4
通讯作者：
Yoshinobu, Tatsuo
中科院分区：
文献类型：
--
作者：
Wagner, Torsten;Werner, Carl Frederik;Yoshinobu, Tatsuo
化学成像系统可以直观地显示传感器表面化学物种的分布。这项工作代表了一种在数字光处理(DLP)设置的帮助下读出光可寻址电位传感器(LAPS)的新的灵活方法。DLP以视频投影仪而闻名，它由镜阵MEMS器件组成，可以快速灵活地生成光图案。在这些光图案的帮助下，LAPS设备的传感器表面可以寻址。与传统的LAPS设置相比，DLP方法具有几个优点，例如，光指示器的光斑大小和形状可以很容易地改变，并且不需要机械移动，这减小了设置的尺寸，提高了测量的稳定性和速度。此外，光束的调制频率和强度是LAPS设置的重要参数。在这项工作中，作者将讨论DLP设置的两种不同的光调制方式，研究不同调制频率和不同光强度的影响，并通过在传感器表面的pH映射来演示新设置的扫描能力。(C)2010爱思唯尔B.V.保留所有权利。
Chemical imaging systems allow the visualisation of the distribution of chemical species on the sensor surface. This work represents a new flexible approach to read out light-addressable potentiometric sensors (LAPS) with the help of a digital light processing (DLP) set-up. The DLP, known well for video projectors, consists of a mirror-array MEMS device, which allows fast and flexible generation of light patterns. With the help of these light patterns, the sensor surface of the LAPS device can be addressed. The DLP approach has several advantages compared to conventional LAPS set-ups, e.g., the spot size and the shape of the light pointer can be changed easily and no mechanical movement is necessary, which reduces the size of the set-up and increases the stability and speed of the measurement. In addition, the modulation frequency and intensity of the light beam are important parameters of the LAPS set-up. Within this work, the authors will discuss two different ways of light modulation by the DLP set-up, investigate the influence of different modulation frequencies and different light intensities as well as demonstrate the scanning capabilities of the new set-up by pH mapping on the sensor surface. (C) 2010 Elsevier B.V. All rights reserved.