Really Real - When is a lock-in data point valid? How big is my error bar?

By David Daughton

Lake Shore Cryotronics, Inc., Westerville, OH

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Bio

David Daughton Dr. David Daughton is a Lake Shore Application Scientist focused on characterizing electronic materials and devices. He received his BS and MS in Physics from the University of Delaware and his PhD in Physics from The Ohio State University in 2010. Much of his work at OSU involved studying scanning tunneling microscopy and optical characterization of organic thin films at cryogenic temperatures. He was a consultant to Lake Shore before joining us in 2011. While here, Dr. Daughton has been the company’s principal investigator working with a team of hardware and software developers on the introduction of our continuous wave THz (CW-THz) based system for materials characterization. Results and observations from his THz-related work have been presented by at various conferences, including the IRMMW-THz conference and the APS March Meeting. In his presentations, Dr. Daughton has addressed how temperature-dependent THz spectroscopies have proven useful in characterizing the electronic properties of this novel materials. Dr. Daughton also works extensively with Lake Shore’s line of cryogenic probe stations, helping customers to configure existing Lake Shore products for a specific application, as well as providing application support for variable temperature measurements.

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Cite this work

Researchers should cite this work as follows:

  • David Daughton (2024), "Really Real - When is a lock-in data point valid? How big is my error bar?," https://nanohub.org/resources/38871.

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Location

1001, Birck Nanotechnology Center, Purdue University, West Lafayette, IN

Tags

Really Real - When is a lock-in data point valid? How big is my error bar?
  • Really, Real 1. Really, Real 0
    00:00/00:00
  • Problem Statement 2. Problem Statement 38.171504838171508
    00:00/00:00
  • V = I R = 50 mA x 50 nW = 2.5 nV 3. V = I R = 50 mA x 50 nW = 2.5 … 91.3913913913914
    00:00/00:00
  • Noise Spectral Density 4. Noise Spectral Density 139.60627293960627
    00:00/00:00
  • ENBW in a lock-in 5. ENBW in a lock-in 429.32932932932937
    00:00/00:00
  • RMS noise 6. RMS noise 546.07941274607947
    00:00/00:00
  • Allan deviation 7. Allan deviation 702.80280280280283
    00:00/00:00
  • Cautionary tale – Cross talk 8. Cautionary tale – Cross talk 961.327994661328
    00:00/00:00