Ordered surface crack patterns in situ formed under confinement on fluidic microchannel boundaries in polydimethylsiloxane

Lab on a Chip ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 668-673
Author(s):  
Yang Bu ◽  
Sheng Ni ◽  
Levent Yobas
Keyword(s):  
Surface Crack ◽  
Microfluidic Chips ◽  
Crack Patterns

Compression applied to microfluidic chips in polydimethylsiloxane (PDMS) results in ordered surface crack patterns on oxidized microchannel boundaries with patterns showing variations with fluidic layout as well as material compliance.

Analysis of Crack Patterns in Drying Corn Starch by in-situ Radiography and X-ray Computer Tomography

2012 ◽  
Vol 52 (7) ◽  
pp. 917-932 ◽  
Author(s):  
H.-A. Crostack ◽  
J. Nellesen ◽  
G. Fischer ◽  
M. Hofmann ◽  
H.-G. Rademacher ◽  
...  
Keyword(s):  
Computer Tomography ◽  
Corn Starch ◽  
X Ray ◽  
Crack Patterns

In-Situ Estimation of Surface Crack Shape From Crack Opening Displacement by Use of NCOD Database System

2010 ◽  
Author(s):  
Jingxia Yue ◽  
Zheng He ◽  
Yukio Fujimoto ◽  
Weiguo Wu
Keyword(s):  
Crack Opening Displacement ◽  
Surface Crack ◽  
Fatigue Cracks ◽  
Crack Opening ◽  
Crack Depth ◽  
Database System ◽  
Shape Estimation ◽  
Opening Displacement ◽  
Crack Shape

This paper proposes an in-situ estimation of crack shape from crack opening displacement (COD) by using of a visualized database system consisting of numerical calculation data of normalized crack opening displacement (NCOD) for some kinds of crack types. The relation between crack depth and corresponding NCOD is discussed based on FE analysis results, from which a crack shape estimation principle is deduced. Visualized software named NCOD Database System was developed to facilitate convenient in-situ estimation of crack shape. Shapes of three kinds of surface crack, partial circle crack in plate, fatigue cracks in gusset weld joint and in large-scale member, are successfully estimated by this system. The paper is supported by the Programme of Introducing Talents of Discipline to Universities (B08031).

Vertical sidewall electrodes monolithically integrated into 3D glass microfluidic chips using water-assisted femtosecond-laser fabrication for in situ control of electrotaxis

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24072-24080 ◽  
Author(s):  
Jian Xu ◽  
Dong Wu ◽  
Joanna Y. Ip ◽  
Katsumi Midorikawa ◽  
Koji Sugioka
Keyword(s):  
Femtosecond Laser ◽  
Microfluidic Chips ◽  
Vertical Sidewall ◽  
Laser Fabrication ◽  
Monolithically Integrated ◽  
In Situ Control ◽  
High Flexibility

Novel sidewall metal patterning with high flexibility enables facile integration of vertical electrodes in microchannels for in situ control of electrotaxis.

Microchip in situ electrosynthesis of silver metallic oxide clusters for ultra-FAST detection of galactose in galactosemic newborns’ urine samples

The Analyst ◽  
2016 ◽  
Vol 141 (21) ◽  
pp. 6002-6007 ◽  
Author(s):  
Laura García-Carmona ◽  
Daniel Rojas ◽  
María Cristina González ◽  
Alberto Escarpa
Keyword(s):  
Urine Samples ◽  
Microfluidic Chips ◽  
Metallic Oxide ◽  
Fast Detection ◽  
First Time

This work describes for the first time the coupling of microfluidic chips (MC) to electrosynthetized silver metallic oxide clusters (AgMOCs).

GPS measurements during two major calving events at Bowdoin Glacier, Greenland

2020 ◽  
Author(s):  
Eef van Dongen ◽  
Guillaume Jouvet ◽  
Fabian Lindner ◽  
Andreas Bauder ◽  
Fabian Walter ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mass Loss ◽  
Sea Level ◽  
Surface Crack ◽  
Critical Strain ◽  
Strain Rates ◽  
Gps Measurements ◽  
Iceberg Calving ◽  
Ice Fracturing

<p>Future mass loss predictions, and thereby sea level rise predictions, are strongly affected by the representation of iceberg calving in numerical ice sheet models. Despite recent advances, gaps in our understanding of calving mechanisms remain and there exists a lack of data to constrain mechanical properties related to ice fracturing. For instance, observed critical strain rates for crevasse initiation span two orders of magnitude.</p><p>Bowdoin Glacier in Northwest Greenland provides a unique opportunity to conduct in-situ measurements near the calving front due to its accessibility via a crevasse-free walkable moraine. In July 2019, two major calving events were surveyed by 10 GPS stations installed along the front in close vicinity to the calving events. Measurements show glacier uplift prior to the first calving event and horizontal compression prior to the second major calving event.</p><p>In contrast to previously observed major events, no precursor such as a large surface crack was visible on the field. Our data suggest a change in calving behaviour from surface crevasses due to hydro-fracturing to basal crevasse formation due to buoyancy, which may be favoured by observed thinning (~4 m yr<sup>-1</sup> since 2013).</p>

scholarly journals In Situ Fine‐Tuning of Microfluidic Chips by Swelling and Its Application to Droplet Microfluidics

2019 ◽  
Vol 4 (8) ◽  
pp. 1900232
Author(s):  
Juan H. González‐Estefan ◽  
Mathieu Gonidec ◽  
Thi Thiet Vu ◽  
Nathalie Daro ◽  
Guillaume Chastanet
Keyword(s):  
Droplet Microfluidics ◽  
Fine Tuning ◽  
Microfluidic Chips

Plasmonic nanopillar array embedded microfluidic chips: an in situ SERS monitoring platform

2015 ◽  
Vol 3 (12) ◽  
pp. 6408-6413 ◽  
Author(s):  
Yingqi Zhao ◽  
Yong-Lai Zhang ◽  
Jian-An Huang ◽  
Zhenyu Zhang ◽  
Xianfeng Chen ◽  
...  
Keyword(s):  
Microfluidic Chips ◽  
Monitoring Platform

Ag/Si nanopillar (NP) array embedded microfluidic chips as an in situ SERS monitoring platform.

In situ visualization of hydrophilic spatial heterogeneity inside microfluidic chips by fluorescence microscopy

Lab on a Chip ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 934-940 ◽  
Author(s):  
Rui Tian ◽  
Kaitao Li ◽  
Wenying Shi ◽  
Caifeng Ding ◽  
Chao Lu
Keyword(s):  
Fluorescence Microscopy ◽  
Spatial Heterogeneity ◽  
Hydroxyl Groups ◽  
Microfluidic Chips ◽  
Aggregation Induced Emission ◽  
In Situ Visualization

We demonstrate in situ visualization of hydrophilic heterogeneity inside microfluidic chips using aggregation-induced emission molecules to label the hydroxyl groups.

Sign in / Sign up

Export Citation Format

Share Document