کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
743577 894363 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kelvin Probe measurements of polymer coated gold substrates: Mechanism studies
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Kelvin Probe measurements of polymer coated gold substrates: Mechanism studies
چکیده انگلیسی

The origin of work-function changes induced in polymer/metal structures (polyacrylic acid (PAA), ammonium and sodium polyacrylate) upon ammonia exposure is studied. To understand and explain the mechanism systematic measurements of uncoated and polymer coated metals are performed in Kelvin Probe (KP) setups. Additional data have been acquired through gravimetric and electrochemical experiments (cyclic voltammetry (CV)). The results obtained confirm that the field effect sensitive processes are taking place at the metal/polymer interface and allow their modelling. The intrinsic sensitivity of metallic samples upon ammonia exposure is influenced by the presence of coating polymers, by their ability to sorb water and to keep the metal surface wet or dry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 134, Issue 1, 28 August 2008, Pages 266–272
نویسندگان
, , , ,