Filters








2,673 Hits in 10.8 sec

Multi-batch micro-self-assembly via controlled capillary forces

Xiaorong Xiong, Yael Hanein, Weihua Wang, D.T. Schwartz, K.F. Bohringer
Proceedings 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems. Expanding the Societal Role of Robotics in the the Next Millennium (Cat. No.01CH37180)  
As a specific approach, we present a technique for assembly of multiple batches of microparts based on capillary forces and controlled modulation of surface hydrophobicity.  ...  We derive a simplified model that gives rise to geometric algorithms for predicting assembly forces and for guiding the design optimization of selfassembling microparts.  ...  In this paper, we have demonstrated a technique for multi-batch, parallel micro selfassembly based on capillary forces and electrochemical modulation of surface hydrophobicity.  ... 
doi:10.1109/iros.2001.977167 dblp:conf/iros/XiongHWSB01 fatcat:b5gmtxnybbdw7d2uqbllxjuhqi

Surface modification and modulation in microstructures: controlling protein adsorption, monolayer desorption and micro-self-assembly

Karl F B hringer
2003 Journal of Micromechanics and Microengineering  
several recent projects that utilize the modulation of surfaces from hydrophobic to hydrophilic and vice versa, or from protein adsorbing to non-fouling, with applications in biomedical microdevices and self-assembling  ...  The surface-to-volume ratio increases with decreasing scale, thus, controlling and changing the surface properties of microstructures can be a powerful tool in the design, fabrication, and use of microsystems  ...  Samples for the electrochemically controlled self-assembly and the ppNIPAM microheaters were prepared at the University of Washington (UW) MEMS Laboratory, the UW Electrical Engineering Microfabrication  ... 
doi:10.1088/0960-1317/13/4/301 fatcat:owpsl3iuufg3rgn2jkhb4xirea

Self-Assembly in Micro- and Nanofluidic Devices: A Review of Recent Efforts

Hwa Seng Khoo, Cheng Lin, Shih-Hao Huang, Fan-Gang Tseng
2011 Micromachines  
This is not only due to their advantages of self-assembling with fine temporal and spatial control in addition to continuous processing that is not easily accessible in conventional batch procedures, but  ...  Self-assembly in micro-and nanofluidic devices has been the focus of much attention in recent years.  ...  involved during self-assembly in micro-and nanofluidics such as electrostatic forces, magnetic forces, capillary force, etc  ... 
doi:10.3390/mi2010017 fatcat:ydgvmkiquzbdvnllz7mgbgzjfe

An Atomic Layer Deposition Method to Fabricate Economical and Robust Large Area Microchannel Plates for Photodetectors

Anil U. Mane, Qing Peng, Jeffrey W. Elam, Daniel C. Bennis, Christopher A. Craven, Michael A. Detarando, John R. Escolas, Henry J. Frisch, Slade J. Jokela, Jason McPhate, Michael J. Minot, Oswald H.W. Siegmund (+3 others)
2012 Physics Procedia  
The self limiting growth mechanism in ALD allows atomic level control over the thickness and composition of resistive and secondary electron emission (SEE) layers that can be deposited conformally on high  ...  aspect ratio capillary glass arrays.  ...  capillaries are assembled to form a hexagonal assembly which is heated and drawn to form a multi-capillary bundle; c) Multicapillary, hexagonal-shaped bundles are further assembled and heated under pressure  ... 
doi:10.1016/j.phpro.2012.03.720 fatcat:ixhq2qwjjrbzvbjfjrvfzp52gi

From shaping to functionalization of micro-droplets and particles

Ryungeun Song, Seongsu Cho, Seonghun Shin, Hyejeong Kim, Jinkee Lee
2021 Nanoscale Advances  
From shaping to functionalization of micro-droplets and particles in passive and active methods, and their applications.  ...  through the self-assembly of block copolymers (BCPs)  ...  The propulsion of the motors could also be controlled by the magnetic force, which was controlled on demand via spatially changing the orientation of the magnetic eld. 212 Zou et al. also presented  ... 
doi:10.1039/d1na00276g fatcat:kesyaueil5enzmv6iw6elosqmm

Microfluidics: A Groundbreaking Technology for PET Tracer Production?

Christian Rensch, Alexander Jackson, Simon Lindner, Ruben Salvamoser, Victor Samper, Stefan Riese, Peter Bartenstein, Carmen Wängler, Björn Wängler
2013 Molecules  
Furthermore, the topics of batch-and single-dose production, cyclotron to quality control integration as well as centralized versus de-centralized market distribution models are addressed.  ...  based on the multi-patient per run batch production capability.  ...  Fluid Transport and Control Various liquid transport regimes have been described in literature and can be separated into: (1) capillary force driven lateral flow, (2) pressure driven platforms utilizing  ... 
doi:10.3390/molecules18077930 pmid:23884128 fatcat:4o7w3ztinfazvcqgqyvvxssjoy

Diverse 3D Microarchitectures Made by Capillary Forming of Carbon Nanotubes

Michael De Volder, Sameh H. Tawfick, Sei Jin Park, Davor Copic, Zhouzhou Zhao, Wei Lu, A. John Hart
2010 Advanced Materials  
limitation is that synthetic self-assembly typically lacks deterministic control of shape at a length scale far exceeding that of the constituent building block.  ...  Synthetic self-assembly [ 9 ] is an emerging means to complement top-down fabrication by control of interactions among nanostructures, and between nanostructures and physical templates.  ... 
doi:10.1002/adma.201001893 pmid:20814919 fatcat:kkca3qmzdfctnn2iol7p4aefha

Self-assembly from milli- to nanoscales: methods and applications

M Mastrangeli, S Abbasi, C Varel, C Van Hoof, J-P Celis, K F Böhringer
2009 Journal of Micromechanics and Microengineering  
The use of capillary forces for folding 2D plates into 3D structures, as well as assembling parts onto a common substrate or aggregating parts to each other into 2D or 3D structures, is discussed.  ...  Shape matching and guided assembly by magnetic forces and electric fields are also reviewed.  ...  Self-assembly using capillary forces Surface tension dominates inertial forces and gravity as we approach sub-millimeter scales.  ... 
doi:10.1088/0960-1317/19/8/083001 pmid:20209016 pmcid:PMC2832205 fatcat:sjbve4oiafg7vpzji4jctmj3we

Biomaterials Meet Microfluidics: From Synthesis Technologies to Biological Applications

Jingyun Ma, Yachen Wang, Jing Liu
2017 Micromachines  
In particular, micro/nano-particles and micro/nano-fibers are introduced respectively.  ...  Compared to biomaterials assisted by conventional strategies, functional biomaterials synthesized by microfluidics are with superior properties and performances, due to their controllable morphology and  ...  Interface self-assembly is based on the self-assembly of colloidal particles or molecules at the two phase interfaces.  ... 
doi:10.3390/mi8080255 pmid:30400445 pmcid:PMC6190052 fatcat:6knw6tiy6jel3hrdv7nwgg6s24

Shaking assisted self-assembly of rectangular-shaped parts

Dung-An Wang, Ben Liao
2010 Journal of Materials Processing Technology  
The yields of the self-assembly for misalignment angles ranging from  15 to  90 are at least 80%.  ...  A process for shaking assisted self-assembly of rectangular-shaped parts is presented. Rectangular parts are assembled to their corresponding binding sites on a glass substrate in an air environment.  ...  Liu et al. (2007) demonstrated a fluid self-assembly method, which is able to integrate micro components in a multi-batch-wise manner.  ... 
doi:10.1016/j.jmatprotec.2009.09.021 fatcat:ysnww63m3nevzl3p4i7aarhvzq

Surface tension-driven self-alignment

Massimo Mastrangeli, Quan Zhou, Veikko Sariola, Pierre Lambert
2017 Soft Matter  
In view of this transition, a broad and accessible review of the physics, material science and applications of capillary self-alignment is presented.  ...  After years of research, demonstrations and developments, the surface engineering and manufacturing technology enabling capillary self-alignment has achieved a degree of maturity conducive to a successful  ...  This principle was engineered to deploy three-dimensional MEMS devices, 15 to self-fold patterned micro-and nanoparticles, 16 and to actuate three-dimensional voxels. 4 Capillary forces are also congenial  ... 
doi:10.1039/c6sm02078j pmid:27905611 fatcat:rm276kj6p5f5zb45cmdbag7apq

Microfluidics for Production of Particles: Mechanism, Methodology, and Applications

Zehua Liu, Flavia Fontana, Andre Python, Jouni T. Hirvonen, Hélder A. Santos
2019 Small  
For both nano-, microparticles/droplets, the previously established mechanisms behind particle production via microfluidics and some typical examples during the past five years are discussed.  ...  are fabricated via multi-phase flow microfluidics.  ...  The prevailing applications for multi-phase flow based microfluidic devices are micro-particles or droplets production, despite there are also nano-emulsions feasibly fabricated via microfluidics.  ... 
doi:10.1002/smll.201904673 pmid:31702878 fatcat:krarlgvzyrhfnahvbdmm7imdjm

Ex situ integration of multifunctional porous polymer monoliths into thermoplastic microfluidic chips

Eric L. Kendall, Erik Wienhold, Omid D. Rahmanian, Don L. DeVoe
2014 Sensors and actuators. B, Chemical  
Off-chip processing allows the parallel preparation of monoliths of differing compositions and surface chemistries in large batches.  ...  elements are formed in a microfabricated mold, rather than within the microchannels, and chemically functionalized off chip before insertion into solvent-softened thermoplastic microchannels during chip assembly  ...  N66001-1-4003 issued by the Space and Naval Warfare Systems Center Pacific (SPAWAR) to the Micro/nano Fluidics Fundamentals Focus (MF3) Center.  ... 
doi:10.1016/j.snb.2014.06.023 pmid:25018587 pmcid:PMC4088264 fatcat:zxha2ntqjrfjpak5jz2dqtuhye

Structured Microgels through Microfluidic Assembly and Their Biomedical Applications

Rong-Cong Luo, Chia-Hung Chen
2012 Soft  
The high degree of control endowed with microfluidics enables the formation of various functional microgels such as multi-compartment encapsulations, Janus-shaped particles and non-spherical microgels.  ...  have aroused great interest in biological engineering aspect, since they outperform their counterparts produced from other techniques and have been applied in drug delivery, 3-Dimensional cell culture, micro-tissues  ...  Responsive multi-compartment microgels have been prepared using higher order emulsions fabricated by using micro-capillary devices.  ... 
doi:10.4236/soft.2012.11001 fatcat:anprmktpbrcsxlwc6vvla5dy4i

Continuous- versus Segmented-Flow Microfluidic Synthesis in Materials Science

Mathieu Gonidec, Josep Puigmartí-Luis
2018 Crystals  
systems provide, on the contrary, very fast homogenization methods, and therefore well-defined super-saturation regimes inside arrays of micro-droplets that can be manipulated and controlled at the milliseconds  ...  In this perspective, we outline the parallel evolution of those two sub-fields by highlighting the key differences between both approaches, via a discussion of their main achievements.  ...  Surprisingly, this work also proved that RD conditions can be used as an advanced micro-engineering tool to guide self-assembly.  ... 
doi:10.3390/cryst9010012 fatcat:27nbbzguzffbjmrxtveqrawjdq
« Previous Showing results 1 — 15 out of 2,673 results