If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Effect of Modulation Source Properties upon Signal-to-Noise Ratios of Inelastic Electron Tunneling Spectra

$29.00 plus tax (Refund Policy)

Buy Article:


Lock-in amplification using ac modulation and second-harmonic detection is routinely employed in such techniques as ac polarography, ac voltammetry, and inelastic electron tunneling spectroscopy (IETS). Properties of the modulation source are shown in the present IET studies to limit the obtainable signal-to-noise ratio of a spectrum. A single inelastic electron tunneling junction is used to demonstrate the effect of various commercial modulation sources on the IET spectrum of benzoic acid on alumina. With all other parameters being held constant, the signal-to-noise ratio of the IET spectrum is found to be inversely correlated with the total harmonic distortion of the modulation source.

Keywords: Benzoic acid; IETS; Inelastic electron tunneling spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702864507585

Affiliations: 1: Center for Catalytic Science and Technology, Department of Chemistry, University of Delaware, Newark, Delaware 19716 2: Polymer Products Department, E256/308, E. I. DuPont de Nemours and Company, Wilmington, Delaware 19898

Publication date: November 1, 1986

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more