The design, fabrication and functional evaluation of the radio-frequency dielectric heating of liquids in an LTCC-based ceramic microfluidic system are described and discussed. The device, which relies on the dielectric heating of liquids, was fabricated using a low temperature co-fired ceramic (LTCC) technology. A multilayered ceramic structure with integrated electrodes, buried channels and cavities in micro and millimetre scales was fabricated. The structure with the dimensions of 35 mm × 22 mm × 2.4 mm includes a buried cavity with a diameter of 17.3 mm and a volume of 0.3 mL. The top and bottom faces of the cavity consist of silver/palladium electrodes protected with 100 μm thick layers of LTCC. The power, used to heat a polar liquid (water) in the cavity with the volume of 0.3 mL, ranges from 5 to 40 W. This novel application of RF dielectric heating could enable the miniaturization of microfluidic systems in many applications. The working principle of such a device and its efficiency are demonstrated using water as the heated medium.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8658528 | PMC |
| http://dx.doi.org/10.3390/ma14237396 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Capillary electrophoresis separations with Betaine:Urea, a deep eutectic solvent as the separation medium.
Anal Chim Acta
January 2025
School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China. Electronic address:
Background: Capillary electrophoresis (CE) is a highly versatile separation technique widely used in analytical chemistry. Traditionally, CE can be categorized as either aqueous or non-aqueous systems based on the buffer solvents employed. For decades, non-aqueous CE has been predominantly associated with the use of organic solvents, a perception deeply ingrained in the scientific community.
View Article and Find Full Text PDFRadio frequency heating assisted Maillard reaction of whey protein - gum Arabic: Improving structural and unlocking functional properties.
Int J Biol Macromol
December 2024
College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USA; Institute of Agro-products Storage and Processing, Xinjiang Academy of Agricultural Science, Urumqi, 830091, China. Electronic address:
Article Synopsis
- Whey protein is a nutritious animal protein, but its usefulness in food systems is limited by its sensitivity to environmental factors.
- The study explores using radio frequency heating to couple whey protein with gum Arabic, significantly improving their functional properties compared to traditional water bath heating.
- Results showed that the RF heating increased the glycosylation degree, enhancing emulsifying, foaming, and antioxidant qualities of the protein-gum conjugates.
Electrochemical Synthesis of Zeolite Coatings with Controlled Crystal Polymorphism and Self-Regulating Growth.
JACS Au
December 2024
Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware DE 19716, United States.
Zeolite coatings are studied as molecular sieves for membrane separation, membrane reactors, and chemical sensor applications. They are also studied as anticorrosive films for metals and alloys, antimicrobial and hydrophobic films for heating, ventilation, and air conditioning, and dielectrics for semiconductor applications. Zeolite coatings are synthesized by hydrothermal, ionothermal, and dry-gel conversion approaches, which require high process temperatures and lengthy times (ranging from hours to days).
View Article and Find Full Text PDFProton diffusion and hydrogen/deuterium exchange in amorphous solid water at temperatures from 114 to 134 K.
J Chem Phys
December 2024
Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
The reaction coefficient for hydrogen/deuterium (H/D) exchange and the diffusion of hydrated excess protons within amorphous solid water (ASW) are characterized as a function of temperature. For these experiments, water films are deposited on a Pt(111) substrate at 108 K, and reactions with pre-adsorbed hydrogen atoms produce hydrated protons. Upon heating, protons diffuse within the water, and H/D exchange occurs when they encounter D2O probe molecules deposited in the films.
View Article and Find Full Text PDFHeterogeneous reactions in a HFCVD reactor: simulation using a 2D model.
Beilstein J Nanotechnol
December 2024
Centro de Investigaciones en Dispositivos Semiconductores (CIDS-ICUAP), Benemérita Universidad Autónoma de Puebla (BUAP). Col. San Manuel, Cd. Universitaria, Av. San Claudio y 14 sur, Edif. IC5 y IC6. Puebla, Pue., 72507 México.
In this study, a simulation of the elementary chemical reactions during SiO film growth in a hot filament chemical vapor deposition (HFCVD) reactor was carried out using a 2D model. For the 2D simulation, the continuity, momentum, heat, and diffusion equations were solved numerically by the software COMSOL Multiphysics based on the finite element method. The model allowed for the simulation of the key parameters of the HFCVD reactor.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!