Open Microfluidics

The book was not strictly a story of droplets, as an introductory chapter to “open microfluidics” was also included. At that time, microflows with open boundaries, i.e. liquid-air interfaces, were starting to interest scientists working ...

Author: Jean Berthier

Publisher: John Wiley & Sons

ISBN: 9781118720868

Category: Science

Page: 336

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Open microfluidics or open-surface is becoming fundamental in scientific domains such as biotechnology, biology and space. First, such systems and devices based on open microfluidics make use of capillary forces to move fluids, without any need for external energy. Second, the “openness” of the flow facilitates the accessibility to the liquid in biotechnology and biology, and reduces the weight in space applications. This book has been conceived to give the reader the fundamental basis of open microfluidics. It covers successively The theory of spontaneous capillary flow, with the general conditions for spontaneous capillary flow, and the dynamic aspects of such flows. The formation of capillary filaments which are associated to small contact angles and sharp grooves. The study of capillary flow in open rectangular, pseudo-rectangular and trapezoidal open microchannels. The dynamics of open capillary flows in grooves with a focus on capillary resistors. The case of very viscous liquids is analyzed. An analysis of suspended capillary flows: such flows move in suspended channels devoid of top cover and bottom plate. Their accessibility is reinforced, and such systems are becoming fundamental in biology. An analysis of “rails” microfluidics, which are flows that move in channels devoid of side walls. This geometry has the advantage to be compatible with capillary networks, which are now of great interest in biotechnology, for molecular detection for example. Paper-based microfluidics where liquids wick flat paper matrix. Applications concern bioassays such as point of care devices (POC). Thread-based microfluidics is a new domain of investigation. It is seeing presently many new developments in the domain of separation and filtration, and opens the way to smart bandages and tissue engineering. The book is intended to cover the theoretical aspects of open microfluidics, experimental approaches, and examples of application.
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Open Channel Microfluidics

He is also a co-author of the book Open Microfluidics published by Scrivener-Wiley Publishing in 2016. Erwin currently works closely with Ashleigh B Theberge as a co-PI in the Bioanalytical Chemistry for Medicine and the environment ...

Author: Jean Berthier

Publisher: Morgan & Claypool Publishers

ISBN: 9781643276649

Category: Technology & Engineering

Page: 170

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Open microfluidics, the study of microflows having a boundary with surrounding air, encompasses different aspects such as paper or thread-based microfluidics, droplet microfluidics and open-channel microfluidics. Open-channel microflow is a flow at the micro-scale, guided by solid structures, and having at least a free boundary (with air or vapor) other than the advancing meniscus. This book is devoted to the study of open-channel microfluidics which (contrary to paper or thread or droplet microfluidics) is still very sparsely documented, but bears many new applications in biology, biotechnology, medicine, material and space sciences. Capillarity being the principal force triggering an open microflow, the principles of capillarity are first recalled. The onset of open-channel microflow is next analyzed and the fundamental notion of generalized Cassie angle (the apparent contact angle which accounts for the presence of air) is presented. The theory of the dynamics of open-channel microflows is then developed, using the notion of averaged friction length which accounts for the presence of air along the boundaries of the flow domain. Different channel morphologies are studied and geometrical features such as valves and capillary pumps are examined. An introduction to two-phase open-channel microflows is also presented showing that immiscible plugs can be transported by an open-channel flow. Finally, a selection of interesting applications in the domains of space, materials, medicine and biology is presented, showing the potentialities of open-channel microfluidics.
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Open Space Microfluidics

In recent years, microfluidic devices have been used in conjunction with organotypic brain slices. While open microfluidic chambers for active perfusion of tissue slices have been developed to permit localized perfusion and analysis of ...

Author: Emmanuel Delamarche

Publisher: John Wiley & Sons

ISBN: 9783527696802

Category: Technology & Engineering

Page: 440

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Summarizing the latest trends and the current state of this research field, this up-to-date book discusses in detail techniques to perform localized alterations on surfaces with great flexibility, including microfluidic probes, multifunctional nanopipettes and various surface patterning techniques, such as dip pen nanolithography. These techniques are also put in perspective in terms of applications and how they can be transformative of numerous (bio)chemical processes involving surfaces. The editors are from IBM Zurich, the pioneers and pacesetters in the field at the forefront of research in this new and rapidly expanding area.
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Micro and Nanotechnology Enabled Applications for Portable Miniaturized Analytical Systems

Meanwhile, various types of devices were designed with different mechanisms, during the extension of open-space systems. Wettability-based fluidic patterning [22], digital microfluidic [23, 24], and capillarybased open microfluidic ...

Author: Sabu Thomas

Publisher: Elsevier

ISBN: 9780128237281

Category: Technology & Engineering

Page: 438

View: 810

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Micro- and Nanotechnology Enabled Applications for Portable Miniaturized Analytical Systems outlines the basic principles of miniaturized analytical devices, such as spectrometric, separation, imaging and electrochemical miniaturized instruments. Concepts such as smartphone-enabled miniaturized detection systems and micro/nanomachines are also reviewed. Subsequent chapters explore the emerging application of these mobile devices for miniaturized analysis in various fields, including medicine and biomedicine, environmental chemistry, food chemistry, and forensic chemistry. This is an important reference source for materials scientists and engineers wanting to understand how miniaturization techniques are being used to create a range of efficient, sustainable electronic and optical devices. Miniaturization describes the concept of manufacturing increasingly smaller mechanical, optical, and electronic products and devices. These smaller instruments can be used to produce micro- and nanoscale components required for analytical procedures. A variety of micro/nanoscale materials have been synthesized and used in analytical procedures, such as sensing materials, sorbents, adsorbents, catalysts, and reactors. The miniaturization of analytical instruments can be applied to the different steps of analytical procedures, such as sample preparation, analytical separation, and detection, reducing the total cost of manufacturing the instruments and the needed reagents and organic solvents. Outlines how miniaturization techniques can be used to create new optical and electronic micro- and nanodevices Explores major application areas, including biomedicine, environmental science and security Assesses the major challenges of using miniaturization techniques
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Micro Drops and Digital Microfluidics

Such type of flow is sometimes called “open microfluidics”. It is clear that such flows cannot be motioned by pressure; however, if the filament is not too long, it can be moved by electrocapillary forces. Thus Satoh and coworkers have ...

Author: Jean Berthier

Publisher: Elsevier

ISBN: 9780815518358

Category: Technology & Engineering

Page: 350

View: 156

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After spending over 12 years developing new microsystems for biotechnology – especially concerned with the microfluidic aspects of these devices – Jean Berthier is considered a leading authority in the field. Now, following the success of his book, Microfluidics for Biotechnology, Dr. Berthier returns to explain how new miniaturization techniques have dramatically expanded the area of microfluidic applications and microsystems into microdrops and digital microfluidics. Engineers interested in designing more versatile microsystems and students who seek to learn the fundamentals of microfluidics will all appreciate the wide-range of information found within Microdrops and Digital Microfluidics. The most recent developments in digital microfluidics are described in clear detail, with a specific focus on the computational, theoretical and experimental study of microdrops. • Over 500 equations and more than 400 illustrations. • Authoritative reporting on the latest changes in microfluidic science, where microscopic liquid volumes are handled as ""microdrops"" and separately from ""nanodrops."" • A methodical examination of how liquid microdrops behave in the complex geometries of modern miniaturized systems and interact with different morphological (micro-fabricated, textured) solid substrates. • A thorough explanation of how capillary forces act on liquid interfaces in contact with micro-fabricated surfaces. • Analysis of how droplets can be manipulated, handled, or transported using electric fields (electrowetting), acoustic actuation (surface acoustic waves), or by a carrier liquid (microflow). • A fresh perspective on the future of microfluidics.
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Advances in Biosensing Technology for Medical Diagnosis

In comparison, the open microfluidics usually does not have any confinement structures. It may occasionally have structures that provide partial confinement. Examples of open microfluidics include the digital microfluidics [10, 11], ...

Author: Han-Sheng Chuang

Publisher: Bentham Science Publishers

ISBN: 9789811464768

Category: Medical

Page: 530

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Biosensing technology is rapidly flourishing in recent years due to the advancement of bio-MEMS/NEMS. However, the booming development of biosensors has not been very well addressed to the unmet clinical needs. Advances in Biosensing Technology for Medical Diagnosis initiates a headway into the realm of cutting-edge diagnostic tools which are expected to become routine clinical practice. This book aims to broaden the readers’ horizon and guide them in tailoring different biosensing techniques for specific diagnostic procedures. Key Features: - 12 chapters cover several aspects of biosensing technologies including working principles and clinical validations - highlights the state-of-the-art biosensing technology developed in all fields - provides information about specific applications of novel biosensors used in clinical diagnosis, - provides step-by-step guidance of microfabrication for biosensors - focuses on bridging the gap between the scientific and the clinical communities - provides information about the diagnostic applications of biosensors for different diseases (including infectious diseases and neurodegenerative diseases). - covers Information about unconventional nano/microfluidic biosensor systems - features contributions from renowned experts in the field of biomedical engineering Advances in Biosensing Technology for Medical Diagnosis serves as a reference for healthcare providers and biomedical engineers who are interesting in biosensing techniques in medicine. The information provided in this reference will also benefit healthcare policymakers who are interested in new technologies that can impact the delivery of diagnostic services in healthcare systems.
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The Detection of Biomarkers

FIGURE 17.12 Various kinds of microfluidic systems from closed to open ones. (A) Closed system with connected inlets to off-syringe pumps to conduct fluid via channel. (B) Semiopen system in which the outlets and inlets are open and ...

Author: Sibel A. Ozkan

Publisher: Academic Press

ISBN: 9780128230756

Category: Medical

Page: 614

View: 892

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Reliable, precise and accurate detection and analysis of biomarkers remains a significant challenge for clinical researchers. Methods for the detection of biomarkers are rather complex, requiring pre-treatment steps before analysis can take place. Moreover, comparing various biomarker assays and tracing research progress in this area systematically is a challenge for researchers. The Detection of Biomarkers presents developments in biomarker detection, including methods tools and strategies, biosensor design, materials, and applications. The book presents methods, materials and procedures that are simple, precise, sensitive, selective, fast and economical, and therefore highly practical for use in clinical research scenarios. This volume situates biomarker detection in its research context and sets out future prospects for the area. Its 20 chapters offer a comprehensive coverage of biomarkers, including progress on nanotechnology, biosensor types, synthesis, immobilization, and applications in various fields. The book also demonstrates, for students, how to synthesize and immobilize biosensors for biomarker assay. It offers researchers real alternative and innovative ways to think about the field of biomarker detection, increasing the reliability, precision and accuracy of biomarker detection. Locates biomarker detection in its research context, setting out present and future prospects Allows clinical researchers to compare various biomarker assays systematically Presents new methods, materials and procedures that are simple, precise, sensitive, selective, fast and economical Gives innovative biomarker assays that are viable alternatives to current complex methods Helps clinical researchers who need reliable, precise and accurate biomarker detection methods
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Microfluidics for Single Cell Analysis

2D single-cell culture platforms based on microfluidics divided into two categories: closed and open microfluidics. Closed systems typically integrate hydrodynamic trapping structures and physical barriers into the platforms, ...

Author: Jin-Ming Lin

Publisher: Springer Nature

ISBN: 9789813297296

Category: Science

Page: 261

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This book summarizes the various microfluidic-based approaches for single-cell capture, isolation, manipulation, culture and observation, lysis, and analysis. Single-cell analysis reveals the heterogeneities in morphology, functions, composition, and genetic performance of seemingly identical cells, and advances in single-cell analysis can overcome the difficulties arising due to cell heterogeneity in the diagnostics for a targeted model of disease. This book provides a detailed review of the state-of-the-art techniques presenting the pros and cons of each of these methods. It also offers lessons learned and tips from front-line investigators to help researchers overcome bottlenecks in their own studies. Highlighting a number of techniques, such as microfluidic droplet techniques, combined microfluidics-mass-spectrometry systems, and nanochannel sampling, it describes in detail a new microfluidic chip-based live single-cell extractor (LSCE) developed in the editor’s laboratory, which opens up new avenues to use open microfluidics in single-cell extraction, single-cell mass spectrometric analysis, single-cell adhesion analysis and subcellular operations. Serving as both an elementary introduction and advanced guidebook, this book interests and inspires scholars and students who are currently studying or wish to study microfluidics-based cell analysis methods.
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Microfluidic Technologies for Miniaturized Analysis Systems

Therefore, chemical patterns and topographic structures such as grooves represent potential building blocks of open microfluidic systems [9], alternative to closed systems fabricated in a solid matrix.

Author: Steffen Hardt

Publisher: Springer Science & Business Media

ISBN: 9780387684246

Category: Technology & Engineering

Page: 616

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This book addresses Lab-on-a-Chip devices. It focuses on microfluidic technologies that have emerged in the past decade. Coverage presents a comprehensive listing of the most promising microfluidic technologies in the Lab-on-a-Chip field. It also details technologies that can be viewed as toolboxes needed to set up complex Lab-on-a-Chip systems.
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Multidisciplinary Microfluidic and Nanofluidic Lab on a Chip

Mao, S.; Zhang, Q.; Li, H.; Zhang, W.; Huang, Q.; Khan, M.; Lin, J.-M. Adhesion Analysis of Single Circulating Tumor Cells on a Base Layer of Endothelial Cells Using Open Microfluidics. Chem. Sci. 2018, 9 (39), 7694À7699. 82.

Author: Xiujun James Li

Publisher: Newnes

ISBN: 9780444594617

Category: Science

Page: 484

View: 733

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Multidisciplinary Microfluidic and Nanofluidic Lab-on-a-Chip: Principles and Applications provides chemists, biophysicists, engineers, life scientists, biotechnologists, and pharmaceutical scientists with the principles behind the design, manufacture, and testing of life sciences microfluidic systems. This book serves as a reference for technologies and applications in multidisciplinary areas, with an emphasis on quickly developing or new emerging areas, including digital microfluidics, nanofluidics, papers-based microfluidics, and cell biology. The book offers practical guidance on how to design, analyze, fabricate, and test microfluidic devices and systems for a wide variety of applications including separations, disease detection, cellular analysis, DNA analysis, proteomics, and drug delivery. Calculations, solved problems, data tables, and design rules are provided to help researchers understand microfluidic basic theory and principles and apply this knowledge to their own unique designs. Recent advances in microfluidics and microsystems for life sciences are impacting chemistry, biophysics, molecular, cell biology, and medicine for applications that include DNA analysis, drug discovery, disease research, and biofluid and environmental monitoring. Provides calculations, solved problems, data tables and design rules to help understand microfluidic basic theory and principles Gives an applied understanding of the principles behind the design, manufacture, and testing of microfluidic systems Emphasizes on quickly developing and emerging areas, including digital microfluidics, nanofluidics, papers-based microfluidics, and cell biology
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