Low energy sputtering yields at grazing incidence have been investigated experimentally using a quartz crystal microbalance QCM technique. This method involved precoating the QCM with a thin film of the desired target material and relating the resonance frequency shift directly to mass loss during ion bombardment. A highly focused, low divergence ion beam provided a well defined incidence angle...

Understanding conformational changes are important when studying a protein such as calmodulin (CaM), which activates various target enzymes and regulates numerous physiological functions. CaM is a highly flexible protein that can transitorily adopt various conformations. A quartz crystal microbalance with dissipation (QCM-D) sensor was used to study binding-induced conformational changes of sur...

Functional polymers that selectively recognize target compounds are developed by imprinting polymerization. In the present paper, two different dipyrromethanes, 5-phenoldipyrromethane (5-pOH-DP) and 5-phenyl-dipyrromethane (5-ph-DP), are synthetized and investigated to develop conductive molecularly imprinted polymer (cMIP) sensors. As target molecules, two homoserine lactone derivatives were t...

Cell adhesion on biomaterial surfaces and the vitality of anchorage dependent cells is affected by several parameters of an adsorbate layer which is intentionally or spontaneously formed. Surface pre-treatments and several conditioning steps prior and during to the cell/biomaterial contact affect the composition, orientation, quantity and viscoelasticity of the interfacing layer between cells a...

Resting sarcoplasmic reticulum (SR) Ca content ([CaSR]R) was varied in cut fibers equilibrated with an internal solution that contained 20 mM EGTA and 0-1.76 mM Ca. SR Ca release and [CaSR]R were measured with the EGTA-phenol red method (. J. Gen. Physiol. 106:259-336). After an action potential, the fractional amount of Ca released from the SR increased from 0.17 to 0.50 when [CaSR]R was reduc...

PURPOSE The purpose of this paper is to explore in a specific hospital care process the applicability in practice of the theories of quality costing and value chains. DESIGN/METHODOLOGY/APPROACH In a retrospective case study an in-depth evaluation of the use of a quality cost model (QCM) and the applicability of Porter's care delivery value chain (CDVC) was performed in a specific care proces...

Using unsteady hydrodynamics theory, this work derives parameter-free analytic relations which quantitatively agree with QCM experiments of either light heavy adsorbed particles ranging between 5 and 200 nm in size.

In this series of two papers, the humidity sensing a carbon nanotube’s (CNTs) network-based material is studied through quartz crystal microbalance (QCM) sensors. To aim, quartzes functionalized with different amounts were realized, exposed to levels, and characterized. first paper, theoretical framework presented, whereas second one presents experimental study. This paper discusses at water ad...

A quartz crystal microbalance (QCM) was used to monitor dextransucrase (DSase)-catalyzed polysaccharide elongation on the glucose-/maltose-ended self-assembly monolayer (SAM) surfaces. Kinetic parameters of the enzymatic elongation indicate that maltose is a promising substrate acceptor for DSase.

A self-assembled DNA nanostructure as an efficient signal amplifier was introduced to create a simple and label-free quartz crystal microbalance with dissipation monitoring (QCM-D) biosensing platform for highly sensitive and selective detection of nucleic acids.