Confocal fluorescence microscopy (CFM) and confocal Raman microscopy (CRM) have been applied to monitor the laminar flow mixing behavior in a poly(dimethylsiloxane) (PDMS) microfluidic channel. Two passive PDMS micromixing devices were fabricated for this purpose: a two-dimensional round-wave channel and a three-dimensional serpentine channel. The microscale laminar flow mixing of ethanol and isopropanol was evaluated using the CFM and CRM at various flow rates. The mixing behavior of confluent streams in the microchannel was assessed by determining the degree of color change in Rhodamine 6G dye on mixing using the CFM. However, it was also possible to quantitatively evaluate the mixing process without employing a fluorescence label using the CRM. The results show a strong potential for CRM as a highly sensitive detection tool to measure fundamental fluid mixing processes and to provide detailed information on chemical changes of non-fluorescent reaction mixtures in a PDMS microfluidic channel.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1366/0003702042336019 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Eliciting Preferences for the Uptake of Smoking Cessation Apps: Discrete Choice Experiment.
J Med Internet Res
January 2025
Behavioural and Implementation Science Group, School of Health Sciences, University of East Anglia, Norwich, United Kingdom.
Background: If the most evidence-based and effective smoking cessation apps are not selected by smokers wanting to quit, their potential to support cessation is limited.
Objective: This study sought to determine the attributes that influence smoking cessation app uptake and understand their relative importance to support future efforts to present evidence-based apps more effectively to maximize uptake.
Methods: Adult smokers from the United Kingdom were invited to participate in a discrete choice experiment.
Oocyte donors' physical outcomes and psychosocial experiences: a mixed-methods study.
Fertil Steril
January 2025
Department of Health Behavior and Biological Sciences, School of Nursing, University of Michigan, Ann Arbor, Michigan.
Objective: To expand knowledge on physical outcomes and psychosocial experiences of oocyte donors after donation across 3 age cohorts.
Design: Cross-sectional mixed-methods survey.
Patients: A total of 363 participants (ages: 22-71 years, M = 38.
Accurate Force Field for Carbon Dioxide-Silica Interactions Based on Density Functional Theory.
J Phys Chem B
January 2025
Nuclear Waste Disposal Research & Analysis Department, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States.
Fluid-silica interfaces are ubiquitous in chemistry, occurring in both natural geochemical environments and practical applications ranging from separations to catalysis. Simulations of these interfaces have been, and continue to be, a significant avenue for understanding their behavior. A constraining factor, however, is the availability of accurate force fields.
View Article and Find Full Text PDFAn evaluation of a community dementia screening program in rural Kenya: DEM-SKY.
Alzheimers Dement
January 2025
Department of Research, Africa Institute of Mental and Brain Health, Nairobi, Kenya.
Introduction: This study describes the implementation outcomes and evaluation of DEM-SKY, a community-based dementia screening program developed in rural Kenya with the support of community health care workers (CHWs).
Methods: DEM-SKY was delivered to 3546 older adults in Makueni County, Kenya, over a 6-month period. Using a mixed-methods design, we explored implementation outcomes with stakeholders through surveys and interviews.
Exploring Self-Management Behavior Profiles in Patients with Multimorbidity: A Sequential, Explanatory Mixed-Methods Study.
Clin Interv Aging
January 2025
Department of Nursing, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, People's Republic of China.
Purpose: This study aims to identify self-management behavior profiles in multimorbid patients, and explore how workload, capacity, and their interactions influence these profiles.
Patients And Methods: A sequential explanatory mixed-methods design was employed. In the quantitative phase (August 2022 to May 2023), data were collected from 1,920 multimorbid patients across nine healthcare facilities in Zhejiang Province.
Want 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!