Active Control of Flow Patterns

Active control of flow patterns refers to the use of external mechanisms, such as electric fields, magnetic fields, or pumps, to manipulate the movement and distribution of fluids within a system. This approach allows for dynamic adjustments to flow behavior in real-time, enabling more precise control in applications like microfluidics, chemical processing, and fluid-based diagnostics. By actively controlling flow patterns, researchers can enhance efficiency, improve accuracy, and achieve complex fluid manipulations that would be challenging with passive systems alone.

Thermal Convection Loops

Thermal convection loops enhance heat transfer and fluid circulation in microfluidic and mesoscopic systems. By regulating flow using temperature variations or external fields, we optimize thermal management in small-scale devices. These findings have implications for microreactors, cooling technologies, and fundamental studies of convective instabilities.

2024 Self-Actuated Microfluidic Chiplet For Two-Stage Multiplex Nucleic Acid Amplification Assay

2024 Molecular Detection Of Respiratory Tract Viruses In Chickens At The Point Of Need By Loop-Mediated Isothermal Amplification (LAMP)

2022 Sensitive, Single Pot, Two-Stage Assay For Hepatitis Viruses

2022 Programmable Endonuclease Combined With Isothermal Polymerase Amplification To Selectively Enrich For Rare Mutant Allele Fractions

2022 Molecular And Pathological Characterization Of Co-Infection Of Poultry With A Recently Emerged Leucocytozoon Caulleryi And Anemia Virus In Egypt

2022 Manually-Operated, Slider Cassette For Multiplexed Molecular Detection At The Point Of Care

2021 Two Stage, Nested Isothermal Amplification In A Single Tube

2021 Single And Two-Stage, Closed-Tube, Point Of Care, Molecular Detection Of SARS-CoV-2

2021 Molecular Detection Of Infectious Laryngeotracheitis Virus In Chickens With A Microfluidic Chip

2021 Electricity-Free, Chemical Heater For Isothermal Nucleic Acid Amplification, With Applications To Covid-19 Home Testing

2021 Detection Of Streptococcus equi subsp. equi In Guttural Pouch Lavage Samples Using A LAMP Microfluidic Device

2021 Crispr Cas9 – Mediated Selective Isothermal Amplification For Sensitive Detection Of Rare Mutant Alleles

2021 A Portable, 3-D Printed, Microfluidic Device For Multiplexed, Real Time, Molecular Detection Of Porcine Epidemic Diarrhea Virus

2020 Highly Specific Enrichment Of Rare Nucleic Acid Fractions Using Thermus Thermophilus Argonaute With Applications In Cancer Diagnostics

2020 A Closed-Tube, Single-Step, Real Time, Reverse Transcription-Loop-Mediated Isothermal Amplification Assay For Infectious Bronchitis Virus Detection In Chickens

2018 Smartphone-Based Mobile Detection Platform For Rapid Molecular Diagnostics And Spatiotemporal Disease Mapping

2018 A Multifunctional Reactor With Dry-Stored Reagents For Enzymatic Amplification Of Nucleic Acids

2017 Two-Stage Isothermal Enzymatic Amplification For Concurrent Multiplex Detection Of Nucleic Acids

2016 Instrument-Free Point-Of-Care Molecular Detection Of Zika Virus

2016 A High-Efficiency Superhydrophobic Plasma Separator

2015 Molecular Detection Of Schistosome Infections With A Disposable Microfluidic Cassette

2015 A Reverse Transcription Loop-Mediated Isothermal Amplification Assay Optimized To Detect Multiple HIV Subtypes

2013 Membrane-Based, Sedimentation-Assisted Plasma Separator For Point Of-Care Applications

2012 Microfluidic, Bead-Based Assay: Theory And Experiments

2012 Porous Bead-Based Microfluidic Assay: Theory And Confocal Microscope Imaging

2012 A Low-Cost Microfluidic Chip For Rapid Genotyping Of Malaria-Transmitting Mosquitoes

2011 Self Heating Cartridge For Molecular Diagnostics

2011 Pulsating Bead-Based Assay

2011 Point-Of-Care Oral-Based Diagnostics

2011 An Isothermal Amplification Reactor With An Integrated Isolation Membrane For Point-Of-Care Detection Of Infectious Diseases

2006 On The Limitations Of Linear Control Of Thermal Convection In A Porous Medium (Pf#06-0204A)

1999 Optimal And Adaptive Control Of Chaotic Convection – Theory And Experiments

1998 Experiments On The Stabilization Of The No-Motion State Of A Fluid Layer Heated From Below And Cooled From Above

1998 Controlling Chaotic Convection Using Neural Nets – Theory And Experiments

1997 The Effects Of Forced Convection On The Power Dissipation Of Constant Temperature Thermal Conductivity Sensors

1996 Rendering Subcritical Hopf Bifurcation Supercritical

1995 Stabilization Of The No-Motion State Of A Horizontal Fluid Layer Heated From Below With Joule Heating

1993 Feedback Control Stabilization Of The No-Motion State Of A Fluid Confined In A Horizontal, Porous Layer Heated From Below

1992 Thermal Convection Loop With Heating From Above

1992 Controlling Chaos In A Thermal Convection Loop

1991 On Controlling A Chaotic System

1991 Active Control Of Convection

1988 Two-Dimensional Bifurcation Phenomena In Thermal Convection In Horizontal Concentric Annuli Containing Saturated Porous Media

1988 Thermal Convection Around A Heat Source Embedded In A Box Containing A Saturated Porous Medium

1987 Thermal Convection Associated With Hot/Cold Pipes Buried In A Semi-Infinite, Saturated, Porous Medium

1985 Ultrasonic Flow Rate Measurement Of Low-Speed Non Isothermal Flows

1984 Thermal Convection In A Horizontal, Eccentric Annulus Containing Saturated Porous Medium – An Extended Perturbation Expansion

1983 On The Effects Of Viscous Dissipation And Pressure Work In Free Convection Loops

1982 Thermal Convection And Boiling In A Porous Medium

1982 Multiple Solution For Natural Convective Flows In An Internally Heated, Vertical Channel With Viscous Dissipation And Pressure Work

1982 Kelvin–Helmholtz Instability for Parallel Flow in Porous Media: A Linear Theory

1981 Transient And Steady Behavior Of An Open, Symmetrically Heated Free Convection Loop

1981 On The Stability And Flow Reversal Of An Asymmetrically Heated Open Convection Loop

1981 Low Rayleigh Number Thermal Convection In A Vertical Cylinder Filled With Porous Materials And Heated From Below

Rayleigh-Benard Convection

Our research on Rayleigh-Bénard convection focuses on controlling convection cell formation using active flow manipulation techniques. By applying electric or magnetic fields, we investigate how these external forces alter the stability and structure of convection patterns. This work helps refine models of heat transfer and fluid dynamics in microscale systems, relevant to engineering and material science applications.

2007 Suppression Of Rayleigh-Benard Convection With Proportional-Derivative Controller

1998 Numerical Investigation Of The Stabilization Of The No-Motion State Of A Fluid Layer Heated From Below And Cooled From Above

1993 Stabilization Of The No-Motion State In Rayleigh-Bénard Convection Through The Use Of Feedback Control

1988 Low Rayleigh Number Convection In Horizontal, Eccentric Annuli

1986 Large Rayleigh Number Convection In A Horizontal, Eccentric Annulus Containing Saturated Porous Media

1984 Low Rayleigh Number Thermal Convection In A Saturated Porous Medium Bounded By Two Horizontal, Eccentric Cylinders

1981 Onset Of Convection In A Permeable Medium Between Vertical Co-Axial Cylinders

Marangoni-Benard Convection

Our laboratory explores Marangoni-Bénard convection in microfluidic systems, where surface tension gradients drive fluid motion. We examine how external control mechanisms, such as localized heating or electric fields, can modify convection patterns to enhance fluid mixing and transport. These insights are valuable for applications in thin-film processing, biomedical assays, and self-assembled nanostructures.

1999 Control Of Marangoni-Benard Convection

Other

2010 Dispersion In Retentive Pillar Array Columns

2007 The Effect Of Secondary Flows On Taylor-Aris Dispersion

1985 On The Stability And Flow Reversal Of Pressure Driven Flow In An Asymmetrically Heated U-Shaped Tube