Results 11 to 20 of about 19,614 (220)

Quartz Crystal Microbalance Sensitivity Loss During Ionic Liquid Deposition: Insights into Film Structure and Morphology. [PDF]

Chemphyschem
Vapor‐deposited ionic liquid films on Au‐coated QCMs evolve from confined, rigidly coupled layers to viscoelastic, bulk‐like overlayers as coverage increases. This transition explains the loss of QCM sensitivity and demonstrates how nanoscale confinement, substrate roughness, and IL properties govern reliable mass detection.
Farinha AFM, Silva SRMR, Alves ACPM, Santos LMNBF, Bondarchuk O, Costa JCS.   +5 more
europepmc   +2 more sources

An Adaptive Measurement System for the Simultaneous Evaluation of Frequency Shift and Series Resistance of QCM in Liquid

Sensors, 2021
In this paper, a novel measurement system based on Quartz Crystal Microbalances is presented. The proposed solution was conceived specifically to overcome the measurement problems related to Quartz Crystal Microbalance (QCM) applications in dielectric ...
Ada Fort, Enza Panzardi, Valerio Vignoli, Marco Tani, Elia Landi, Marco Mugnaini, Pietro Vaccarella   +6 more
doaj   +1 more source

Low-Cost QCM Sensor System for Screening Semen Samples [PDF]

, 2010
Artificial insemination is a well-established part of modern agricultural practice. A viable semen sample is judged by the total number of spermatozoa (sperm) in the sample and the motility of the sperm.
Atherton, Shaun, Evans, Carl, Hughes, David, McHale, Glen, Morris, Robert, Newton, Michael, Stanley, Simon   +6 more
core   +8 more sources

Laser-Induced Graphene on a Quartz Crystal Microbalance for Humidity Sensing

Crystals, 2021
In this study, a simple method for synthesizing graphene layer directly on a quartz crystal microbalance (QCM) using a laser was developed. This laser-induced graphene (LIG) was used for sensing surface to simultaneously measure changes in the adsorbed ...
Jihun Choi, Saeyeon Baek, Sangmin Jeon, Changyong Yim   +3 more
doaj   +1 more source

Electrophoretic-deposited HAP nano-layer as a QCM-D sensor coating: effects of suspension concentration and electric-field strength

Biosurface and Biotribology, 2018
This study investigates the fabrication of hydroxyapatite (HAP) nano-coating on a gold–quartz crystal sensor used for quartz crystal microbalance with dissipation (QCM-D) measurement using an electrophoretic deposition technique.
Liang Zheng, Wei Gong, Yue Tang, Genlei Ma, Jing Zheng, Shi-zhe Chen, Wei-hua Li   +6 more
doaj   +1 more source

The effect of SU-8 patterned surfaces on the response of the quartz crystal microbalance [PDF]

, 2004
In this work we present data showing the effect of patterning layers of SU-8 photoresist on a quartz crystal microbalance (QCM) and subsequent chemical treatment to increase their hydrophobicity. Patterns with 5 mu m diameter pillars spaced every 10 mu m
Bruckenstein, C.R. Evans, Ellis, G. McHale, Hossenlopp, Kanazawa, M.I. Newton, Martin, Martin, McHale, McHale, N.J. Shirtcliffe, Onda, S.M. Stanley, Sauerbrey, Schumacher, Schumacher, Shirtcliffe, Theisen, Thompson, Yang, Yang   +21 more
core   +1 more source

Quartz crystal microbalance (QCM) arrays for solution analysis [PDF]

, 1997
Quartz crystal microbalances (QCMs) are piezoelectric thickness-shear-mode resonators where the resonant frequency has long been known to vary linearly with the mass of rigid layers on the surface when the device is in contact with air. This reports summarizes the results from a Laboratory Directed Research and Development effort to use an array of ...
Schneider, T. W., Frye, G. C., Martin, S. J., Kottenstette, R. J., Osbourn, G. C., Bartholomew, J. W., Weisenbach, L., Bohuszewicz, T. V., Doughty, D. H.   +8 more
openaire   +2 more sources

A portable and computer-simulation analysis for the real-time measurement of the QCMD systems for the biomedical application

Sensing and Bio-Sensing Research, 2018
The research of the quartz-crystal microbalance (QCM) biosensors can provide an effective, real-time, point-of-care testing-detection technology for the usage in the areas of clinical and laboratory research, drug screening, and bacteria testing, among ...
Batgerel Tumurbaatar, Min-Jeong Kim, Chan-Hee Park, Cheol Sang Kim   +3 more
doaj   +1 more source

Quartz Crystal Microbalance a Powerful Technique for Nanogram Mass Sensing

Eurasian Journal of Science and Engineering, 2022
A quartz crystal microbalance (QCM) is an acoustic transducer that sends an electronic signal when a mass change is detected on the sensor surface of an oscillating quartz-crystal resonator.
Sivar Aziz Baiz, Payam Najmaddin, Azeez A. Barzinjy   +2 more
doaj  

A Noncontact Dibutyl Phthalate Sensor Based on a Wireless-Electrodeless QCM-D Modified with Nano-Structured Nickel Hydroxide

Sensors, 2017
Dibutyl phthalate (DBP) is a widely used plasticizer which has been found to be a reproductive and developmental toxicant and ubiquitously existing in the air. A highly sensitive method for DBP monitoring in the environment is urgently needed.
Daqi Chen, Xiyang Sun, Kaihuan Zhang, Guokang Fan, You Wang, Guang Li, Ruifen Hu   +6 more
doaj   +1 more source