Research Interests
Patents
Standards Outputs
NIST Standard Reference Material 3461 "Standard Reference Cantilevers for Atomic Force Microscopy Spring Constant Calibration" is now available for purchase through the NIST Office of Standard Reference Materials at the following link: https://shop.nist.gov/ccrz__ProductList?cartID=&portalUser=&store=&cclcl=en_US&operation=quickSearch&searchText=3461
SRM 3461 consists of a tiny rectangular silicon chip smaller than a ladybug, containing seven uniform cantilevers of different lengths, at one end. Each cantilever is about the width of a human hair and is individually calibrated and certified for stiffness (Spring Constant) at NIST using a laser Doppler vibrometer with traceability to the SI. A press release for this artifact provides more detail on the following link: https://www.nist.gov/news-events/news/2023/01/srm-3461-accurate-and-precise-force-calibration-artifact
Previous Chairman of Versailles Advanced Materials and Standards (VAMAS) Technical working area 29 on Nanomechanics Applied to Scanning Probe Microscopy (SPM). VAMAS Report #49 (Mini round robin on AFM cantilever spring constant calibration) is available on the web at http://www.vamas.org/twa29/documents/2009_vamas_twa29_report_49_mrr_afm_cantilever_calibration.pdf
Public Media Highlights
Federal News Radio Interview http://federalnewsradio.com/technology/2014/08/saving-money-by-making-money-one-engineers-quest-saves-millions-at-the-us-mint/