[labnetwork] inquiry about scanning kelvin probe microscopy

[Stieg, Adam]

Dear Xiaojun,

I believe you will find there to be many facilities that can provide access to instruments capable of KPFM measurements, CNSI at UCLA included.

Keep in mind that while most commercial AFMs can operate in this mode there are specific considerations that must be taken into acct, namely your resolution requirements both spatially and with respect to the contact potential/surface potential difference you hope to measure. The frequency modulated mode provides better sensitivity but is not as readily available as a standard mode on many commercial AFMs. Amplitude modulation, like what is used in traditional Kelvin probe measurements, is the industry standard but does limit one's ability to resolve features smaller than 100s of nanometers. Finally, this measurement can be quite sensitive to measurement artifacts. To get reliable data you should identify a resource that not only provides the appropriate equipment but also the requisite expertise to provide training and/or analysis services.

UCLA is quite far from you, so I would recommend looking either at UIUC or ORNL as a starting point.

Best,
Adam

Adam Z. Stieg Ph.D.
Associate Director
California NanoSystems Institute
UCLA

On Jun 19, 2017, at 19:36, Deng, Jiangdong <jdeng at cns.fas.harvard.edu<mailto:jdeng at cns.fas.harvard.edu>> wrote:

Xiaojun,

Some AFMs (atomic force microscope) equip Kelvin probe measurement function. The Asylum Research AFM systems in CNS at Harvard has SKP capability and they are open to public. Please feel free to let your user to contact me for more details.

-JD


Sent from my iPhone

On Jun 19, 2017, at 6:58 PM, "xiaojin.wang at louisville.edu<mailto:xiaojin.wang at louisville.edu>" <xiaojin.wang at louisville.edu<mailto:xiaojin.wang at louisville.edu>> wrote:

Dear Colleagues,

Do you know where I can find a scanning kelvin probe microscopy that is open to public? Thank you very much.

Best wishes

Xiaojin Wang, Ph.D.
Senior Process Engineer
Micro/Nano Technology Center
University of Louisville
Shumaker Research Building, Room 232
2210 South Brook Street
Louisville, KY  40292

502-852-7671
http://louisville.edu/micronano/<https://urldefense.proofpoint.com/v2/url?u=http-3A__louisville.edu_micronano_&d=DwMFAg&c=WO-RGvefibhHBZq3fL85hQ&r=xyAjVPR-2dDowrLX0t_yU46ZECNmXwhK82bRlJRQKq4&m=0MAOEWUBxgiCg2Thx9lrVoYdlJlZf3VOxaNLwPOwdr8&s=GHdSunw-5hxQq9MX4WDKF-hLGEh1mJuUiJydWVBF02Q&e=>


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