How Can You Align a Thin Electrode Parallel to a Surface Without Direct Contact?

[splitringtail]

I have a apparatus with a thin electrode that is suppose to be parallel with surface beneath it. I can level the surface, but you cannot put a level on this electrode.

I was thinking have like a block precisely made to the expected distance between the electrode and bottom to determine the alignment, but I was thinking if I was not careful I could damage the electrode.

Another thought, maybe use a laser level and calibrated to the level surface, then some how move it up to the elevation of the electrode to check its alignment. However, I have heard that even the levels used by contractors are not very precise and can be quite cumbersome in those applications.

I was wondering if there is any specialized instrumentation and/or produces used in the laboratory setting. I figure those who work in optics have developed something, but I cannot find any information on the issue.

I would prefer to get some direction/recommendation for literature and documentation.

Thank You

 

[mgb_phys]

To get it parallel you can either measure the distance electrode-substrate at each end
Using something like this http://www.sensorland.com/HowPage056.html is fairly cheap and accurate to <1um and non-contact. Or you can use an old fashioned traveling microscope to do the same thing.

Another apporach if your electrode is reflective enough is to shine a laser at each end (eg slide the unit under a fixed laser) and measure the distance apart the reflected spots appear on the ceiling. With a bit of trig and assumign the position of the laser is fixed you can work out the slope of the electrode.

 

[astrokreng]

I understand your concerns about accurately aligning your thin electrode with the surface beneath it. This is a crucial step in ensuring the success of your experiment or apparatus. Fortunately, there are specialized instruments and techniques that can help you achieve precise alignment in the laboratory setting.

One option is to use a laser interferometer, which is a highly accurate and precise tool for measuring the distance between two surfaces. This can be used to determine the exact distance between your electrode and the bottom surface, allowing you to adjust accordingly for parallel alignment. It is important to note that the accuracy of the laser interferometer will depend on its calibration and the stability of the environment in which it is used.

Another option is to use a precision level, which is specifically designed for measuring small differences in elevation. These levels are more accurate and sensitive than the levels used by contractors, making them a better choice for laboratory applications. However, they can also be quite expensive and may require specialized training to use properly.

In addition to these instruments, there are also specialized fixtures and jigs that can be used to hold and align your electrode in a precise and repeatable manner. These can be custom-made or purchased from companies that specialize in laboratory equipment for optics and other scientific fields.

I recommend doing some research on laser interferometers, precision levels, and specialized fixtures to determine which option is best suited for your specific needs and budget. There may also be scientific papers or technical manuals available on these topics that can provide more in-depth information and guidance on how to achieve precise alignment in your setup.