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  JoVE Clinical and Translational Medicine

  
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  JoVE Bioengineering

  
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  JoVE Applied Physics

  
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  JoVE Environment

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JoVE Science Education

General Laboratory Techniques

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Basic Methods in Cellular and Molecular Biology

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Model Organisms I

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Essentials of
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 JoVE Applied Physics

Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates

1Mechanical and Aerospace Engineering, University of Texas at Arlington


JoVE 3725

A micropunching lithography approach is developed to generate micro- and submicron-patterns on top, sidewall and bottom surfaces of polymer substrates. It overcomes the obstacles of patterning conducting polymers and generating sidewall patterns. This method allows rapid fabrication of multiple features and is free of aggressive chemistry.

 JoVE Bioengineering

Capillary Force Lithography for Cardiac Tissue Engineering

1Department of Bioengineering, University of Washington, 2Department of Pathology, University of Washington


JoVE 50039

In this protocol, we demonstrate the fabrication of biomimetic cardiac cell culture substrata made from two distinct polymeric materials using capillary force lithography. The described methods provide a scalable, cost-effective technique to engineer the structure and function of macroscopic cardiac tissues for in vitro and in vivo applications.

 JoVE Bioengineering

Plasma Lithography Surface Patterning for Creation of Cell Networks

1Aerospace and Mechanical Engineering, University of Arizona, 2Biomedical Engineering IDP and BIO5 Institute, University of Arizona


JoVE 3115

A versatile plasma lithography technique has been developed to generate stable surface patterns for guiding cellular attachment. This technique can be applied to create cell networks including those that mimic natural tissues and has been used for studying several, distinct cell types.

 JoVE Applied Physics

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

1Laboratoire Interdisciplinaire Carnot de Bourgogne CNRS-UMR 6303, Université de Bourgogne, 2Department of Optics and Optical Engineering, University of Science and Technology of China, 3CEMES, CNRS-UPR 8011


JoVE 51048

Silver nanowires can simultaneously transport electrons and optical information in the form of surface plasmons. A procedure is described here to realize such a shared circuitry and the limitations at propagating both information carriers are evaluated.

 JoVE Bioengineering

Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy

1Centre for Vascular Research and Australian Centre for Nanomedicine, The University of New South Wales, 2School of Chemistry and Australian Centre for Nanomedicine, The University of New South Wales


JoVE 50310

A method for the assembly of adhesive and soluble gradients in a microscopy chamber for live cell migration studies is described. The engineered environment combines antifouling surfaces and adhesive tracks with solution gradients and therefore allows one to determine the relative importance of guidance cues.

 JoVE Bioengineering

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation

1Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Juelich GmbH


JoVE 50560

In this protocol the fabrication, setup and basic operation of a microfluidic picoliter bioreactor (PLBR) for single-cell analysis of prokaryotic microorganisms is introduced. Industrially relevant microorganisms were analyzed as proof of principle allowing insights into growth rate, morphology, and phenotypic heterogeneity over certain time periods, hardly possible with conventional methods.

 JoVE Applied Physics

Patterning via Optical Saturable Transitions - Fabrication and Characterization

1Department of Electrical and Computer Engineering, The University of Utah, 2Department of Chemistry, The University of Wisconsin-Madison


JoVE 52449

We report that the diffraction limit of conventional optical lithography can be overcome by exploiting the transitions of organic photochromic derivatives induced by their photoisomerization at low light intensities.1-3 This paper outlines our fabrication technique and two locking mechanisms, namely: dissolution of one photoisomer and electrochemical oxidation.

 JoVE Applied Physics

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

1School of Physics & Astronomy, University of St Andrews


JoVE 50216

Use of photonic crystal slow light waveguides and cavities has been widely adopted by the photonics community in many differing applications. Therefore fabrication and characterization of these devices are of great interest. This paper outlines our fabrication technique and two optical characterization methods, namely: interferometric (waveguides) and resonant scattering (cavities).

 JoVE Bioengineering

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging

1Department of Radiology and Biomedical Imaging, University of California, San Francisco, 2School of Medicine, University of California, San Francisco, 3Department of Radiology and Biomedical Imaging, UCSF Medical Center, 4University of California, San Francisco, 5Hansen Medical, Mountain View, CA


JoVE 50299

Current applied to an endovascular microcatheter with microcoil tip made by laser lathe lithography can achieve controllable deflections under magnetic resonance (MR) guidance, which may improve speed and efficacy of navigation of vasculature during various endovascular procedures.

 JoVE Applied Physics

Writing and Low-Temperature Characterization of Oxide Nanostructures

1Department of Physics, University of Pittsburgh


JoVE 51886

Oxide nanostructures provide new opportunities for science and technology. The interfacial conductivity between LaAlO3 and SrTiO3 can be controlled with near-atomic precision using a conductive atomic force microscopy technique. The protocol for creating and measuring conductive nanostructures at LaAlO3/SrTiO3 interfaces is demonstrated.

 JoVE Chemistry

Fabricating Nanogaps by Nanoskiving

1Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials, University of Groningen


JoVE 50406

The fabrication of electrically addressable, high-aspect-ratio (> 1000:1) metal nanowires separated by gaps of single nanometers using either sacrificial layers of aluminum and silver or self-assembled monolayers as templates is described. These nanogap structures are fabricated without a clean room or any photo- or electron-beam lithographic processes by a form of edge lithography known as nanoskiving.

 JoVE Applied Physics

Nanomoulding of Functional Materials, a Versatile Complementary Pattern Replication Method to Nanoimprinting

1Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), 2Department of Electrical Engineering and Computer Sciences, University of California, Berkeley


JoVE 50177

We describe a nanomoulding technique which allows low-cost nanoscale patterning of functional materials, materials stacks and full devices. Nanomoulding can be performed on any nanoimprinting setup and can be applied to a wide range of materials and deposition processes.

 JoVE Applied Physics

Fabrication and Visualization of Capillary Bridges in Slit Pore Geometry

1Chemical and Biomolecular Engineering Department, Johns Hopkins University


JoVE 51143

A procedure for creating and imaging capillary bridges in slit-pore geometry is presented. The creation of capillary bridges relies on the formation of pillars to provide a directional physical and chemical heterogeneity to pin the fluid. Capillary bridges are formed and manipulated using microstages and visualized using a CCD camera.

 JoVE Chemistry

Origami Inspired Self-assembly of Patterned and Reconfigurable Particles

1Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, 2Department of Chemistry, The Johns Hopkins University


JoVE 50022

We describe experimental details of the synthesis of patterned and reconfigurable particles from two dimensional (2D) precursors. This methodology can be used to create particles in a variety of shapes including polyhedra and grasping devices at length scales ranging from the micro to centimeter scale.

 JoVE Applied Physics

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

1Department of Physics, The State University of New York at Buffalo, 2Joint Quantum Institute, University of Maryland, 3The National Institute of Standards and Technology, 4Cryogenics and Fluids Branch, NASA Goddard Space Flight Center, 5HRL Laboratories


JoVE 51179

A method for permanently bonding two silicon wafers so as to realize a uniform enclosure is described. This includes wafer preparation, cleaning, RT bonding, and annealing processes. The resulting bonded wafers (cells) have uniformity of enclosure ~1%1,2. The resulting geometry allows for measurements of confined liquids and gasses.

 JoVE Applied Physics

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

1Electrical Engineering and Computer Science Department, University of Michigan


JoVE 50517

We describe methods for the design, fabrication, and experimental characterization of plasmonic photoconductive emitters, which offer two orders of magnitude higher terahertz power levels compared to conventional photoconductive emitters.

 JoVE Bioengineering

Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

1Lane Department of Computer Science and Electrical Engineering, West Virginia University, 2Department of Cell Biology and Neuroscience, University of California at Riverside


JoVE 50771

A microchannels-on-a-chip platform was developed by the combination of photolithographic reflowable photoresist technique, soft lithography, and microfluidics. The endothelialized microchannels platform mimics the three-dimensional (3D) geometry of in vivo microvessels, runs under controlled continuous perfusion flow, allows for high-quality and real-time imaging and can be applied for microvascular research.

 JoVE Bioengineering

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells

1Department of Chemistry and Applied Biosciences, ETH Zurich, Switzerland


JoVE 50618

In this article we present a microfluidic chip for single cell analysis. It allows the quantification of intracellular proteins, enzymes, cofactors, and second messengers by means of fluorescent assays or immunoassays. 

 JoVE Bioengineering

Simple Microfluidic Devices for in vivo Imaging of C. elegans, Drosophila and Zebrafish

1Neurobiology, NCBS-TIFR, 2Department of Biological Sciences, TIFR


JoVE 3780

A simple microfluidic device has been developed to perform anesthetic free in vivo imaging of C. elegans, intact Drosophila larvae and zebrafish larvae. The device utilizes a deformable PDMS membrane to immobilize these model organisms in order to perform time lapse imaging of numerous processes such as heart beat, cell division and sub-cellular neuronal transport. We demonstrate the use of this device and show examples of different types of data collected from different model systems.

 JoVE Applied Physics

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

1NEST Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, 2NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR


JoVE 50524

In this video we first describe fabrication and operation procedures of a surface acoustic wave (SAW) acoustic counterflow device. We then demonstrate an experimental setup that allows for both qualitative flow visualization and quantitative analysis of complex flows within the SAW pumping device.

 JoVE Clinical and Translational Medicine

Evaluation of Cancer Stem Cell Migration Using Compartmentalizing Microfluidic Devices and Live Cell Imaging

1Department of Biomedical Engineering, University of Wisconsin-Madison, 2Materials Science Program, University of Wisconsin-Madison, 3Department of Neurological Surgery, University of Wisconsin-Madison, 4Carbone Comprehensive Cancer Center and Center for Stem Cell and Regenerative Medicine, University of Wisconsin-Madison


JoVE 3297

A compartmentalizing microfluidic device for investigating cancer stem cell migration is described. This novel platform creates a viable cellular microenvironment and enables microscopic visualization of live cell locomotion. Highly motile cancer cells are isolated to study molecular mechanisms of aggressive infiltration, potentially leading to more effective future therapies.

 JoVE Applied Physics

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

1Department of Electrical and Computer Engineering, University of California, Davis, 2Digital Light Projection (DLP) Technology Development, Texas Instruments, 3Birck Nanotechnology Center and the Department of Electrical and Computer Engineering, Purdue University


JoVE 51251

The robust device design of fringing-field electrostatic MEMS actuators results in inherently low squeeze-film damping conditions and long settling times when performing switching operations using conventional step biasing. Real-time switching time improvement with DC-dynamic waveforms reduces the settling time of fringing-field MEMS actuators when transitioning between up-to-down and down-to-up states.

 JoVE Applied Physics

Fabrication of Spatially Confined Complex Oxides

1Materials Science and Technology Division, Oak Ridge National Laboratory, 2Department of Physics & Astronomy, University of Tennessee, Knoxville


JoVE 50573

We describe the use of pulsed laser deposition (PLD), photolithography and wire-bonding techniques to create micrometer scale complex oxides devices. The PLD is utilized to grow epitaxial thin films. Photolithography and wire-bonding techniques are introduced to create practical devices for measurement purposes.

 JoVE Bioengineering

Fabricating Complex Culture Substrates Using Robotic Microcontact Printing (R-µCP) and Sequential Nucleophilic Substitution

1Department of Biomedical Engineering, University of Wisconsin, Madison, 2Department of Mechanical Engineering, University of Wisconsin, Madison


JoVE 52186

Cell culture substrates functionalized with microscale patterns of biological ligands have immense utility in the field of tissue engineering. Here, we demonstrate the versatile and automated manufacture of tissue culture substrates with multiple, micropatterned poly(ethylene glycol) brushes presenting orthogonal chemistries that enable spatially precise and site-specific immobilization of biological ligands.

 JoVE Bioengineering

Generation of Shear Adhesion Map Using SynVivo Synthetic Microvascular Networks

1Biomedical Technology, CFD Research Corporation


JoVE 51025

Flow chambers used in adhesion experiments typically consist of linear flow paths and require multiple experiments at different flow rates to generate a shear adhesion map. SynVivo-SMN enables the generation of shear adhesion map using a single experiment utilizing microliter volumes resulting in significant savings in time and consumables.

 JoVE Immunology and Infection

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture

1Department of Health Science & Technology, Cartilage Engineering & Regeneration, 2Biomaterials Department, Innovent e.V.


JoVE 50632

A bioprinter was used to create patterned hydrogels based on a sacrificial mold. The poloxamer mold was backfilled with a second hydrogel and then eluted, leaving voids which were filled with a third hydrogel. This method uses fast elution and good printability of poloxamer to generate complex architectures from biopolymers.

 JoVE Bioengineering

A Microfluidic Technique to Probe Cell Deformability

1Department of Integrative Biology and Physiology, University of California, Los Angeles, 2Department of Aerospace and Mechanical Engineering, University of Notre Dame, 3Molecular Imaging Center, University of Southern California


JoVE 51474

We demonstrate a microfluidics-based assay to measure the timescale for cells to transit through a sequence of micron-scale constrictions.

 JoVE Applied Physics

Fabrication of Silica Ultra High Quality Factor Microresonators

1Department of Chemical Engineering and Materials Science, University of Southern California, 2Department of Electrical Engineering-Electrophysics, University of Southern California


JoVE 4164

We describe the use of a carbon dioxide laser reflow technique to fabricate silica resonant cavities, including free-standing microspheres and on-chip microtoroids. The reflow method removes surface imperfections, allowing long photon lifetimes within both devices. The resulting devices have ultra high quality factors, enabling applications ranging from telecommunications to biodetection.

 JoVE Chemistry

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

1Department of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, 2Materials Science, Zernike Institute for Advanced Materials, University of Groningen, 3ICTM - Center for Catalysis and Chemical Engineering


JoVE 50673

This article describes the preparation of well-ordered nickel nanofoams via electroless metal deposition onto nanoporous templates obtained from self-assembled diblock copolymer based supramolecules.

 JoVE Bioengineering

A Microfluidic-based Hydrodynamic Trap for Single Particles

1Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, 2Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign


JoVE 2517

In this article, we present a microfluidic-based method for particle confinement based on hydrodynamic flow. We demonstrate stable particle trapping at a fluid stagnation point using a feedback control mechanism, thereby enabling confinement and micromanipulation of arbitrary particles in an integrated microdevice.

 JoVE Bioengineering

Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium

1Department of Chemistry, Duke University, 2Hajim School of Engineering and Applied Sciences, University of Rochester, 3Department of Chemical Engineering, University of Rochester


JoVE 3478

Here we describe a simple method for patterning oxide-free silicon and germanium with reactive organic monolayers and demonstrate functionalization of the patterned substrates with small molecules and proteins. The approach completely protects surfaces from chemical oxidation, provides precise control over feature morphology, and provides ready access to chemically discriminated patterns.

 JoVE Bioengineering

Microfabricated Platforms for Mechanically Dynamic Cell Culture

1Department of Mechanical and Industrial Engineering, University of Toronto, 2Institute of Biomaterials and Biomedical Engineering, University of Toronto, 3Faculty of Dentistry, University of Toronto


JoVE 2224

In this protocol, we demonstrate the fabrication of a microactuator array of vertically displaced posts on which the technology is based, and how this base technology can be modified to conduct high-throughput mechanically dynamic cell culture in both two-dimensional and three-dimensional culture paradigms.

 JoVE Biology

Brain Slice Stimulation Using a Microfluidic Network and Standard Perfusion Chamber

1Dept. of Bioengineering, University of Illinois, Chicago, 2Department of Anatomy and Cell Biology, University of Illinois, Chicago


JoVE 302

We demonstrate fabrication of a simple microfluidic device that can be integrated with standard electrophysiology setups to expose microscale surfaces of a brain slice in a well controlled manner to different neurotransmitters.

 JoVE Bioengineering

A Microfluidic Device for Studying Multiple Distinct Strains

1Department of Biochemistry and Molecular Biology, George S. Wise Faculty of Life Sciences, Tel Aviv University


JoVE 4257

We present a simple method to produce microfluidic devices capable of applying similar dynamic conditions to multiple distinct strains, without the need for a clean room or soft lithography.

 JoVE Biology

Antifouling Self-assembled Monolayers on Microelectrodes for Patterning Biomolecules

1Department of Physics, Texas A&M University (TAMU), 2Department of Biomedical Engineering, Texas A&M University (TAMU)


JoVE 1390

We present a procedure for forming a poly(ethylene glycol) self-assembled monolayer (PEG-SAM) on a silicon substrate with gold microelectrodes. The PEG-SAM is formed in a single step and prevents biofouling on silicon and gold surfaces. Electrophoresis is then used for patterning biomolecules down to the nanoscale.

 JoVE Bioengineering

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

1Center for Bio/Molecular Science & Engineering, US Naval Research Laboratory, 2Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill


JoVE 50958

Two adjacent fluids passing through a grooved microfluidic channel can be directed to form a sheath around a prepolymer core; thereby determining both shape and cross-section. Photoinitiated polymerization, such as thiol click chemistry, is well suited for rapidly solidifying the core fluid into a microfiber with predetermined size and shape.

 JoVE Bioengineering

Formation of Biomembrane Microarrays with a Squeegee-based Assembly Method

1Department of Electrical and Computer Engineering, University of Minnesota, 2Department of Biomedical Engineering, University of Minnesota, 3Department of Neurology, Mayo Clinic College of Medicine, 4Department of Immunology, Mayo Clinic College of Medicine


JoVE 51501

Supported lipid bilayers and natural membrane particles are convenient systems that can approximate the properties of cell membranes and be incorporated in a variety of analytical strategies. Here we demonstrate a method for preparing microarrays composed of supported lipid bilayer-coated SiO2 beads, phospholipid vesicles or natural membrane particles.

 JoVE Bioengineering

Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows

1Department of Chemical and Biological Engineering, University of Ottawa, 2Department of Mechanical Engineering, University of Ottawa


JoVE 50314

Micro-particle image velocimetry (μPIV) is used to visualize paired images of micro particles seeded in blood flows which are cross-correlated to give an accurate velocity profile. Shear rate, maximum velocity, velocity profile shape, and flow rate, each of which has clinical applications, can be derived from these measurements.

 JoVE Bioengineering

High Throughput Single-cell and Multiple-cell Micro-encapsulation

1Department of Mechanical Engineering, Vanderbilt University


JoVE 4096

Combining monodisperse drop generation with inertial ordering of cells and particles, we describe a method to encapsulate a desired number of cells or particles in a single drop at kHz rates. We demonstrate efficiencies twice exceeding those of unordered encapsulation for single- and double-particle drops.

 JoVE Bioengineering

Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast

1Molecular Systems Biology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 2Department for the Biology of Ageing, European Research Institute for the Biology of Ageing, University Medical Centre Groningen, University of Groningen, 3Institute of Biochemistry, ETH Zurich, 4Department of Health Sciences and Technology, ETH Zurich, 5Institute of Molecular Systems Biology, ETH Zurich


JoVE 50143

We describe here the operation of a microfluidic device that allows continuous and high-resolution microscopic imaging of single budding yeast cells during their complete replicative and/or chronological lifespan.

 JoVE Neuroscience

Preparation of Neuronal Co-cultures with Single Cell Precision

1Leibniz-Institut für Analytische Wissenschaften, ISAS, 2Department of Biochemical Engineering, University College London, 3Institute for Life Sciences, University of Southampton


JoVE 51389

Protocols for single neuron microfluidic arraying and water masking for the in-chip plasma patterning of biomaterial coatings are described. Highly interconnected co-cultures can be prepared using minimal cell inputs.

 JoVE Applied Physics

Micro-masonry for 3D Additive Micromanufacturing

1Mechanical Science and Engineering, University of Illinois at Urbana-Champaign


JoVE 51974

This paper introduces a 3D additive micromanufacturing strategy (termed ‘micro-masonry’) for the flexible fabrication of microelectromechanical system (MEMS) structures and devices. This approach involves transfer printing-based assembly of micro/nanoscale materials in conjunction with rapid thermal annealing-enabled material bonding techniques.

 JoVE Bioengineering

Microscale Vortex-assisted Electroporator for Sequential Molecular Delivery

1The Rowland Institute, Harvard University


JoVE 51702

A microfluidic vortex assisted electroporation platform was developed for sequential delivery of multiple molecules into identical cell populations with precise and independent dosage control. The system’s size based target cell purification step preceding electroporation aided to enhance molecular delivery efficiency and processed cell viability.

 JoVE Bioengineering

Creating Two-Dimensional Patterned Substrates for Protein and Cell Confinement

1Department of Chemistry, Washington University in St. Louis


JoVE 3164

Self-assembled monolayers (SAMs) formed from long chain alkane thiols on gold provide well-defined substrates for the formation of protein patterns and cell confinement. Microcontact printing of hexadecanethiol using a polydimethylsiloxane (PDMS) stamp followed by backfilling with a glycol-terminated alkane thiol monomer produces a pattern where protein and cells adsorb only to the stamped hexadecanethiol region.

 JoVE Bioengineering

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level

1Department of Mechanical Engineering, University of Michigan-Dearborn, 2Department of Surgery/Transplant, University of Illinois at Chicago, 3Department of Bioengineering, University of Illinois at Chicago


JoVE 50616

Microfluidic oxygen control confers more than just convenience and speed over hypoxic chambers for biological experiments. Especially when implemented via diffusion through a membrane, microfluidic oxygen can provide simultaneous liquid and gas phase modulations at the microscale-level. This technique enables dynamic multi-parametric experiments critical for studying islet pathophysiology.

 JoVE Applied Physics

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

1Mechanosynthesis Group, Department of Mechanical Engineering, University of Michigan, 2IMEC, Belgium


JoVE 3980

We present methods for fabrication of patterned microstructures of vertically aligned carbon nanotubes (CNTs), and their use as master molds for production of polymer microstructures with organized nanoscale surface texture. The CNT forests are densified by condensation of solvent onto the substrate, which significantly increases their packing density and enables self-directed formation of 3D shapes.

 JoVE Bioengineering

Fabrication of Micropatterned Hydrogels for Neural Culture Systems using Dynamic Mask Projection Photolithography

1Biomedical Engineering, Tulane University


JoVE 2636

Simple techniques are described for the rapid production of microfabricated neural culture systems using a digital micromirror device for dynamic mask projection lithography on regular cell culture substrates. These culture systems may be more representative of natural biological architecture, and the techniques described could be adapted for numerous applications.

 JoVE Applied Physics

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

1Department of Mechanical Engineering, Massachusetts Institute of Technology


JoVE 4457

We demonstrate controlled pattern transformation of swelling gel tubes by elastic instability. A simple projection micro stereo-lithography setup is built using an off-the-shelf digital data projector to fabricate three-dimensional polymeric structures in a layer-by-layer fashion. Swelling hydrogel tubes under mechanical constraint display various circumferential buckling modes depending on dimension.

 JoVE Biology

Fabrication of a Microfluidic Device for the Compartmentalization of Neuron Soma and Axons

1Department of Biomedical Engineering, University of California, Irvine (UCI), 2Stem Cell Research Center, University of California, Irvine (UCI), 3Institute for Brain Aging and Dementia, University of California, Irvine (UCI)


JoVE 261

In this video we demonstrate the technique of soft lithography with polydimethyl siloxane (PDMS) which we use to farbricate a microfluidic device for culturing neurons.

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