Navigation Links
Open microfluidic and nanofluidic systems

contact line is visible in the upper right image in Figure 1. In such a situation, the contact angle is not determined by the classical Young equation but can vary over a wide range of values.

A surprising prediction of the new theory is that the experimentally observed polymorphism of the wetting liquid depends only on two parameters: (i) the channel geometry, i.e., the ratio of the channel depth to the channel width; and (ii) the interaction between substrate material and liquid. One has to distinguish seven different liquid morphologies which involve localized droplets (D), extended filaments (F), and thin wedges (W) at the channel corners. For microfluidics applications, the most important morphology regime is (F) which corresponds to stable filaments. Since this regime covers a relatively small region of the morphology diagram, it can only be obtained if one carefully matches the channel geometry with the substrate wettability. Thus, a water filament in a narrow channel that has a width of 100 nanometer can sustain an overpressure up to 15 atm. In contrast, if the channel had a width of one millimeter, the water filament could only sustain a thousandth part of an atmosphere.

One relatively simple application of the morphology is obtained if the system is designed in such a way that one can vary or switch the contact angle in a controlled fashion. One such method is provided by electrowetting; alternative methods, which have recently been developed, are substrate surfaces covered by molecular monolayers that can be switched by light, temperature, or electric potential.

The experiments described in the PNAS study use a polymeric liquid that freezes quickly and can then be scanned directly with the tip of an atomic force microsope. However, the same morphology diagram should also apply to other liquids and other substrate materials. It should also remain valid if one further shrinks the surface channels and, in this way, moves deeper into
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3 4

Related biology news :

1. Scripps scientists find potential for catastrophic shifts in Pacific ecosystems
2. A new way to share models of biological systems
3. Motor transport in bio-nano systems
4. Nanoscale method for investigating living systems
5. Cookbook recipes would cure disease with nontoxic DNA delivery systems
6. Avian influenza virus in mammals spreads beyond the site of infection to other organ systems
7. Ocean acidification threatens cold-water coral ecosystems
8. Beaver dams create healthy downstream ecosystems
9. Killer B cells demonstrate evolutionary link between fish and mammal immune systems
10. Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
11. Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Open microfluidic and nanofluidic systems

(Date:5/14/2015)... DUBLIN , May 14, 2015 Research and ... addition of the "Fingerprint Sensors Market in Smart ... This report believes that 2014 was a watershed ... to Apple,s introduction of ,Apple Pay,. Apple gave fingerprint ... its mobile payment service. Fingerprint sensors are a must-have ...
(Date:5/11/2015)... 11, 2015  Synaptics Incorporated (NASDAQ: SYNA ... today announced the appointment of Wajid Ali ... Officer, reporting to Rick Bergman , President ... Financial Officer, Kathleen Bayless , who announced ... Mr. Ali brings extensive financial management expertise to ...
(Date:5/11/2015)... , May 11, 2015 Curemark LLC, ... the start of a new Phase III double blind, ... its novel formulation, CM-AT, on all children ages 3-8 ... its FDA Phase III double blinded clinical trial for ... low levels of the digestive enzyme chymotrypsin. This new ...
Breaking Biology News(10 mins):Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2
... Fla. For years, pilots flying into combat have jammed ... turns out that moths can do it, too. A ... hawkmoths use sonic pulses from their genitals to respond to ... to jam the echolocation ability of their predators. ...
... the VTT Technical Research Centre of Finland, lignocellulosic biomass can ... price of less than one euro per litre. A new ... half the energy of wood raw materials to the end-product. ... commercial-scale production plant in Europe. VTT has assessed the ...
... 2000, researchers at the UCLA Center for Sleep Research ... disorder characterized by uncontrollable periods of deep sleep, had ... their brains than healthy people. The study was the ... disorder. Subsequent work by this group ...
Cached Biology News:UF researcher shows hawkmoths use ultrasound to combat bats 2UF researcher shows hawkmoths use ultrasound to combat bats 3Gasification method turns forest residues to biofuel with less than a euro per liter 2UCLA researchers find new clue to cause of human narcolepsy 2
(Date:5/20/2015)... 20, 2015 Research and Markets ( ... "Top Technologies in HW_Technical Insights" report to their ... evaluated technology trends in the Health and Wellness sector ... to have an impact in the year 2015. The ... top 10 health and wellness technologies that are anticipated ...
(Date:5/20/2015)... , May 20, 2015  Select Medical ... the Federal Trade Commission granted early termination of ... Improvements Act of 1976, as amended, applicable to ... Acquisition Corporation, a joint venture that Select has ... As previously announced, MJ Acquisition Corporation ...
(Date:5/20/2015)... (PRWEB) May 20, 2015 Agricultural firm ... anniversary of its acquisition of Tiger-Sul. Since the ... (Calgary Alberta, Canada) in May 2005, H.J. Baker has ... build it into a comprehensive portfolio of product offerings ... of H.J. Baker and the innovation of Tiger-Sul, transforming ...
(Date:5/20/2015)...  Cypher Genomics, Inc., a leading genome informatics ... to apply Cypher,s Coral TM technology to ... response to innovative medicines. The information generated from ... access to the right medicine at the right ... and potentially inform new companion diagnostics.  ...
Breaking Biology Technology:Top Technologies in the Health and Wellness Industry 2015 2Select Medical Corporation's Proposed Acquisition of Concentra Inc. through Joint Venture with Welsh Carson Receives Antitrust Clearance 2Agricultural Firm H.J. Baker & Bro., Inc., Celebrates 10 Years Since Acquisition Of Tiger-Sul 2Agricultural Firm H.J. Baker & Bro., Inc., Celebrates 10 Years Since Acquisition Of Tiger-Sul 3Cypher Genomics Collaborates with Celgene Corporation to Identify Novel Genomic Biomarkers 2
... LLC.,today announced the addition of Mark Scherling to ... FCP as Program,Management Office and Siemens Practice Director., ... thought leadership,experience to FCP. Prior to joining FCP, ... at Catholic Healthcare West. Prior to that,responsibility, Mark ...
... Technologies GmbH,the leading developer of RAFT intervention therapeutics, ... trial of its lead RAFT modulator,TF002 in patients ... miltefosine, exerts its anti- inflammatory activity via RAFT,modulation. ... cells that,play a role in the complex physiological ...
... February 15, 2008 USC and Second Sight Medical Products ... announced today that they have completed enrollment of the first ... Argus II Retinal Prosthesis System. They also announced that enrollment ... Mexico. , We are pleased that Second Sight, along ...
Cached Biology Technology:FCP Welcomes Mark Scherling 2JADO Reports Clinical Proof of Concept With Raft Modulator in Atopic Dermatitis 2JADO Reports Clinical Proof of Concept With Raft Modulator in Atopic Dermatitis 3USC and second sight announce European clinical trial for Argus II retinal implant 2USC and second sight announce European clinical trial for Argus II retinal implant 3
... pre-validated SNP sequencing services ... within 93 genes including ... more than 80 tyrosine ... were developed and validated ...
... 384-Well Microarray plates are ideal for use as ... liquid handling applications (down to 5µl). These plates ... well design. Features 384 ... available 70µl well volume (cylindrical well), 55µl ...
Anti-Phospho-JKK/SEK1/MKK4 pAb Description: 100 g rabbit polyclonal antibody. Reacts with human/mouse/rat. Tested in WB. Research Focus: signal transduction Storage: -20C Shipping Tem...
...
Biology Products: