Directional wetting on patterned surfaces

Bliznyuk, Olesya

doi:10.3990/1.9789036531979

Cited by 6 publications

(5 citation statements)

References 118 publications

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“…For example, the role of protonation is not understood in detail due to both experimental and theoretical limitations. Experimentally, the proton affinities (PA) can be measured with acceptable accuracy (see, however, the problems associated with inappropriate application of the kinetic method [13] and recent works on "fixing" the PA scale [14]). However, the position of the proton in amino acids or oligopeptides cannot be located unambiguously.…”

mentioning

confidence: 99%

The effect of protonation site on bond strengths in simple peptides: Application of Ab initio and modified neglect of differential overlap bond orders and modified neglect of differential overlap energy partitioning

Somogyi

Wysocki

Mayer

1994

J. Am. Soc. Mass Spectrom.

109

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A comparative study of ab initio 6-31G(*) and semiempirical modified neglect of differential overlap (MNDO) bond orders and MNDO diatomic energy contributions for the description of bond strengths in neutral and protonated glycine, diglycine, triglycine, and dialanine is presented. Good correlations were found between 6-31G(*) and MNDO bond orders and between MNDO bond orders and diatomic energy contributions. Although bond orders and diatomic energy contributions are inherently different quantities, both predict the changes in bond strengths due to protonation to be qualitatively the same. The theoretically predicted differences in bond strengths for different protonated forms clearly indicate that in peptide fragmentation schemes one should consider even those protonated forms whose formation is not preferred energetically.

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mentioning

confidence: 99%

The effect of protonation site on bond strengths in simple peptides: Application of Ab initio and modified neglect of differential overlap bond orders and modified neglect of differential overlap energy partitioning

Somogyi

Wysocki

Mayer

1994

J. Am. Soc. Mass Spectrom.

109

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“…Unfortunately, the droplet moves around easily on such surface (as on a lotus leaf) and pinning the droplet to a location is difficult [ 9 ]. Additionally, most of the reported (super)hydrophobic surfaces are made of/coated with materials that are not electrically conductive [ 60 , 61 , 62 ]. Therefore, an electrically-conductive, hydrophobic surface which mimics a “coffee ring” (pinned edges) is required [ 26 ].…”

Section: Droplet-based Beating Of Diffusion Limit In Electrical Bimentioning

confidence: 99%

Droplet-based Biosensing for Lab-on-a-Chip, Open Microfluidics Platforms

et al. 2016

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Low cost, portable sensors can transform health care by bringing easily available diagnostic devices to low and middle income population, particularly in developing countries. Sample preparation, analyte handling and labeling are primary cost concerns for traditional lab-based diagnostic systems. Lab-on-a-chip (LoC) platforms based on droplet-based microfluidics promise to integrate and automate these complex and expensive laboratory procedures onto a single chip; the cost will be further reduced if label-free biosensors could be integrated onto the LoC platforms. Here, we review some recent developments of label-free, droplet-based biosensors, compatible with “open” digital microfluidic systems. These low-cost droplet-based biosensors overcome some of the fundamental limitations of the classical sensors, enabling timely diagnosis. We identify the key challenges that must be addressed to make these sensors commercially viable and summarize a number of promising research directions.

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“…Designed chemically heterogeneous substrates have been increasingly used for the engineering of micropatterns of thin films and applications that require accurate dispensing and distribution of liquids on solid surfaces (Zope et al (2001)). One example of such applications is in the design of the chemical patterns of the nozzle plate in inkjet print heads (Bliznyuk (2011); Kooij et al (2012)). Quantifying the characteristics of wetting layer on the nozzle plate and designing suitable chemical patterns to control the motion of the ink are critical to improving the printing quality (Bliznyuk (2011); Kooij et al (2012)).…”

Section: Introductionmentioning

confidence: 99%

“…One example of such applications is in the design of the chemical patterns of the nozzle plate in inkjet print heads (Bliznyuk (2011); Kooij et al (2012)). Quantifying the characteristics of wetting layer on the nozzle plate and designing suitable chemical patterns to control the motion of the ink are critical to improving the printing quality (Bliznyuk (2011); Kooij et al (2012)). Another application is microcontact printing where a stamp is used to transfer the material onto a substrate to create a desired pattern.…”

Section: Introductionmentioning

confidence: 99%

Steady-states of thin film droplets on chemically heterogeneous substrates

Liu,

Witelski

2020

Preprint

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We study steady-state thin films on a chemically heterogeneous substrates of finite size, subject to no-flux boundary conditions. Based on the structure of the bifurcation diagram, we classify the one-dimensional steady-state solutions that exist on such substrates into six different branches and develop asymptotic estimates for the steady-states on each branch. We show using perturbation expansions, that leading order solutions provide good predictions of the steady-state thin films on stepwise-patterned substrates. The analysis in one dimension can be extended to axisymmetric solutions. We also examine the influence of the wettability contrast on linear stability and dynamics. Results are also applied to describe two-dimensional droplets on hydrophilic square patches and striped regions used in microfluidic applications.

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Directional wetting on patterned surfaces

Cited by 6 publications

References 118 publications

The effect of protonation site on bond strengths in simple peptides: Application of Ab initio and modified neglect of differential overlap bond orders and modified neglect of differential overlap energy partitioning

The effect of protonation site on bond strengths in simple peptides: Application of Ab initio and modified neglect of differential overlap bond orders and modified neglect of differential overlap energy partitioning

Droplet-based Biosensing for Lab-on-a-Chip, Open Microfluidics Platforms

Steady-states of thin film droplets on chemically heterogeneous substrates

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