Separation of Bulk Effects and Bound Mass during Adsorption of Surfactants Probed by Quartz Crystal Microbalance with Dissipation: Insight into Data Interpretation

2010 ◽  
Vol 82 (21) ◽  
pp. 9116-9121 ◽  
Author(s):  
Romain Bordes ◽  
Fredrik Höök
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Data Interpretation ◽  
Insight Into

scholarly journals A Multichannel Microfluidic Sensing Cartridge for Bioanalytical Applications of Monolithic Quartz Crystal Microbalance

Biosensors ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 189
Author(s):  
María Calero ◽  
Román Fernández ◽  
Pablo García ◽  
José Vicente García ◽  
María García ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Pressure Control ◽  
Liquid Transition ◽  
Acoustic Wave Sensors ◽  
Sealing Mechanism ◽  
Bioanalytical Applications ◽  
Wave Sensors ◽  
Protein Surface Interactions ◽  
Insight Into

Integrating acoustic wave sensors into lab-on-a-chip (LoC) devices is a well-known challenge. We address this challenge by designing a microfluidic device housing a monolithic array of 24 high-fundamental frequency quartz crystal microbalance with dissipation (HFF-QCMD) sensors. The device features six 6-µL channels of four sensors each for low-volume parallel measurements, a sealing mechanism that provides appropriate pressure control while assuring liquid confinement and maintaining good stability, and provides a mechanical, electrical, and thermal interface with the characterization electronics. We validate the device by measuring the response of the HFF-QCMD sensors to the air-to-liquid transition, for which the robust Kanazawa–Gordon–Mason theory exists, and then by studying the adsorption of model bioanalytes (neutravidin and biotinylated albumin). With these experiments, we show how the effects of the protein–surface interactions propagate within adsorbed protein multilayers, offering essentially new insight into the design of affinity-based bioanalytical sensors.

Distinguishing deposition, corrosion, and stripping of transient heterogeneous materials during molecular electrocatalysis

2019 ◽  
Vol 48 (19) ◽  
pp. 6372-6382 ◽  
Author(s):  
David J. Sconyers ◽  
James D. Blakemore
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Heterogeneous Materials ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Proton Reduction ◽  
Electrode Surfaces ◽  
Insight Into

The electrochemical quartz crystal microbalance (EQCM) can readily detect formation of heterogeneous materials on electrode surfaces. Here, the behaviors of two cobaloxime-type catalysts for proton reduction have been investigated with EQCM, providing new insight into the involvement of transient heterogeneous materials in catalysis.

Adsorption-Induced Surface Stress Effect on the Resonance Behavior of a Quartz Crystal Microbalance

2006 ◽  
Author(s):  
H. Zhuang ◽  
P. Lu ◽  
S. P. Lim
Keyword(s):  
Quartz Crystal Microbalance ◽  
Surface Stress ◽  
Quartz Crystal ◽  
Stress Effect ◽  
Resonance Behavior ◽  
Surface Stress Effect ◽  
Deposited Metal ◽  
Fundamental Understanding ◽  
Basic Equations ◽  
Insight Into

The effect of adsorption-induced surface stress on the response of a quartz crystal microbalance (QCM) with reduced size is investigated. The model proposed here incorporates the adsorption-induced surface stress into the basic equations, where surface stress is characterized by experimentally determined parameters. Some numerical examples show that as the dimensions of a QCM shrinks, surface stress trends to play an important role in sensing, and is more significant for smaller scales. Therefore, the measured resonance frequency shift of a QCM is induced by combination of mass loading and adsorption-induced surface stress. The model discussed here can be used to provide an insight into the fundamental understanding of the effect of adsorption-induced surface stress on micro- and nano-QCM response of deposited metal films, or bio-molecular adsorption.

New Perspectives in Monitoring the Flame Synthesis of Iron Oxide Nanoparticles: Addressing Solid and Gas-Phase Diagnostics Challenges

2015 ◽  
Vol 1747 ◽  
Author(s):  
Igor Rahinov ◽  
Marina Poliak ◽  
Alexey Fomin ◽  
Vladimir Tsionsky ◽  
Sergey Cheskis
Keyword(s):  
Gas Phase ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Flame Synthesis ◽  
Oxide Nanoparticles ◽  
Laser Absorption ◽  
Cavity Laser ◽  
Insight Into

ABSTRACTSeveral techniques for in-situ monitoring and characterization of flame synthesized nanoparticles are described with the goal of gaining further insight into the mechanisms governing nanoparticle (NP) formation in flame reactors. These include: a combined particle mass spectrometer - quartz crystal microbalance apparatus (PMS-QCM); The Light Induced Detuning –Quartz Crystal Microbalance (LID-QCM) method; Application of Intra Cavity Laser Absorption Spectroscopy (ICLAS) for monitoring gas phase intermediates in a particle laden environment.

Sign in / Sign up

Export Citation Format

Share Document