Because the broadly consumed pain killer diclofenac (DCF) is a recognized pollutant, monitoring of its concentration is routinely performed in surface waters. As a valuable alternative to chromatographic and immunochemical assays, we developed a piezoelectric immunosensor to quantify DCF, first in buffer (PBS) and then in river water samples. A sen...
Post-combustion CO2 capture is a promising approach for complementing other strategies to mitigate climate change. Liquid absorption is currently used to capture CO2 from post-combustion flue gases. However, the high energy cost required to regenerate the liquid absorbents is a major drawback for this process. As a result, solid sorbents have been ...
The interaction between zwitterionic lipids and graphene derivatives, such as graphene oxide (GO) and thermally reduced graphene oxide (rGO), was investigated using the quartz crystal microbalance with dissipation monitoring (QCM-D), a technique with high time resolution that offers an ultra-low mass detection range. Graphene-based QCM sensors were...
International audience
A number of glucose biosensor configurations were produced to evaluate their performance in detecting the range of glucose concentrations they are submitted to. Five different modifications were produced, the first being a replica of the electrode modification studied in the work done by Unnikrishnan et al. and the other four consisted of alteratio...
Published in Microsystem Technologies
A bonded structure of quartz crystal microbalance (QCM) based on finite element method to measure dew point is proposed. Adhesive joints of QCM have dominating impacts on QCM’s stability in a constant environment which is one of crucial problems in designing dew point sensors. Our main purpose is to seek an optimum bonding plan for keeping the freq...
As part of the mini-symposium entitled "Shark Tank-UMass Spin-out Life Sciences Start-ups," Dr. Dewilde discusses an example of UMass life sciences technology that has been spun out into a start-up company -- Cell QCM from UMass Lowell.
Published in Journal of Materials Science
Adding potassium to Cu(In,Ga)Se2 absorbers has been shown to enhance photovoltaic power conversion efficiency. To illuminate possible mechanisms for this enhancement and limits to beneficial K incorporation, the properties of Cu1−xKxInSe2 (CKIS) thin-film alloys have been studied. Films with K/(K + Cu), or x, from 0 to 1 were grown by co-evaporatio...
Published in Applied Physics A
Decorating carbon nanotubes (CNTs) with nanoparticles has proved to be an intelligent approach to improve the gas adsorption properties of CNTs for the development of new sensors, including hydrogen sensors. However, in order to take advantage of this hybrid structure, methods are needed that ensure a proper decoration and the fabrication of small ...
Published in Instruments and Experimental Techniques
A system for measuring the mass loss of nonmetallic materials exposed to electrons, protons, and electromagnetic radiation in vacuum is described. The system consists of four temperature-controlled (at temperatures of 293, 233, 203, and 78 K) quartz crystal microbalances, which provide detailed information on the mass loss as a function of the mate...
