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Wednesday, July 23, 2014
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Magnetohydrodynamic Based Circular Liquid Chromatography On Chip
Champak Das Guochun Wang and Forrest Payne

This poster demonstrates cyclic liquid chromatography on chip and shows how this can be used in other closed loop applications.

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Novel Valve Designs in a Completely Sealed Microfluidic System
Guochun Wang

Two one time use valve strategies have been successfully demonstrated in a completely sealed assay chip. They were also shown to be feasible for on chip reagent storage.

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Electrochemical Microfluidic Biosensor for E.coli Detection
Mohammadali Safavieh, Minhaz Uddin Ahmed, and Mohammed Zourob

Microfluidic electrochemical biosensor based on Loop-mediated Isothermal Amplification (LAMP) was developed for detection and quantification of E.coli. The electrochemical detection was achieved using Hoechst 33258 redox molecule and linear sweep voltametry (LSV). Here, we detect and quantify 48 CFU/ml of bacteria in 35 min in LB media and urine samples. This microfluidic chip has great potential to be used as a point of care diagnostic (POC) device for clinical application.

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Aptamer-based protein biochip with a SPAD array time-resolved detection
L. Pasquardini1, L. Pancheri1, E. Morganti1, L. Lunelli1, C. Collini1, L. Lorenzelli1, D. Stoppa1, E. Buselli2, A. Menciassi2, C. Pederzolli1

In this work a silicon biochip based on a matrix of transparent micro-reactor sites coupled with a linear SPAD (Single-Photon Avalanche Diode) detector array for detecting traces of proteins in biological fluids is presented. A microfluidic layer of PDMS containing a peristaltic pump was implemented. The biofunctional layer for the detection of target proteins is based on a dual-site binding strategy employing DNA aptamers.

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Optical Microchip Sensors for Multiplexed Detection of Biological Pathogens
D. Bhatta, A. Michel, M. Marti Villalba, G. D. Emmerson, I. J. G Sparrow, M. B. McDonnell, E. A. Perkins , R. W. Ely and G. A. Cartwright

SpectroSens, a multi-channel optical microchip sensor system suitable for rapid, label-free multiplexed detection of a wide range of bio-hazardous agents is presented. Optical chips containing multiple high-precision planar Bragg gratings are exploited as low-cost, robust refractive index sensors.

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Low cost direct optical structuring of lab-on-a-chip devices using stamps photopolymer
German Comina, Jose Solis, Walter Estrada

In this work the development of microfluidics devices using a simple, fast and low cost fabrication method is shown. The devices were made using a photopolymer designed for making stamps. The obtained results make this concept a convenient technology for configuring compact service areas of specialized microfluidic and detection microstructures compatible with autonomous LOC devices.

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On chip micro-extraction and real-time PCR with integrated SPAD optical fluorescence detection for nucleic acid analysis
Cristina Potrich, Elisa Morganti, Nicola Massari, Lucio Pancher, C. Kostoulas, Laura Pasquardini, Cristian Collini, Andrea Adami, Lorenzo Lunelli, F. Kalatzis, David Stoppa, Cecilia Pederzolli, Leandro Lorenzelli

A PDMS lab-on-a-chip for one step DNA isolation and real time-polymerase chain reaction (RT-PCR) has been designed, fabricated, and characterized for point-of-care clinical diagnostics. In addition, a module for on-chip optical detection based on SPAD - Single-Photon Avalanche Diode - detector has also been developed and used to monitor the presence of specific DNA polymorphisms possibly related to genetic diseases.

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Microfluidic chips with nanostructures for investigation of biological objects by methods of high resolution microscopy
I.V. KUKHTEVICH 1; A.A. EVSTRAPOV 1,2,3; A.S. BUKATIN 2,3; I.S. MUKHIN 1,2

We have designed and fabricated a microfluidic chips (MFC) with integrated net of nanochannels (traps) for fixation of biological samples in their native environment during study by SPM and CLSM. These traps were created by method of focused ion beam lithography. The width of fabricated nanochannels is in the range from 50 to 300 nm. Fabricated MFC were investigated on test samples in liquid buffer solution.

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Mixed Self-Assembled Monolayers on Bi-functional Magnetic Microcarriers
D.M. Love, J.J. Palfreyman, K. Vyas, T. Mitrelias, C.H.W. Barnes

We present a bi-functional magnetic microcarrier design, intended for bioassay applications. The chemical functionalisation on the gold side of the microcarriers is optimised using mixed self-assembled monolayers. In-flow quartz crystal microbalance measurements of the formation kinetics are discussed. Fluorescence results are presented.

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Showing Results 21 - 30 of 127
Scientific News
Researchers Invent Nanotech Microchip to Diagnose Type-1 Diabetes
The cheap, portable, microchip-based test could speed up diagnosis and enable studies of how the disease develops.
Revealing the Role of “Precocious” Dendritic Cells in Inflammatory Response
Discovery makes it possible for researchers to explore how these “precocious” cells escalate the body’s immune response when the body is under attack.
New NIST Metamaterial Gives Light a One-Way Ticket
The device could someday play a role in optical information processing and in novel biosensing devices.
Automating Laboratory-On-A-Chip To Cut Healthcare Costs
Computer programming language automates “laboratory-on-a-chip” technologies and has potential to improve and reduce cost of healthcare.
Chemical Sensor on a Chip
Using miniaturized laser technology, a tiny sensor has been built at the Vienna University of Technology which can test the chemical composition of liquids.
Miniature Gas Chromatograph Could Aid Early Crop Disease Detection
About the size of a 9-volt battery, the technology’s portability could provide farmers with a tool to quickly evaluate the health of their crops.
Ultra-Sensitive Nano-Chip for Early Cancer Detection
Device is able to detect very low concentrations of protein cancer markers, enabling diagnoses of the disease in its earliest stages.
Stanford Research Leads to New Understanding of How Cells Grow and Shrink
Researchers use new techniques to document how cells can conceal growth and then suddenly swell up.
Bone Marrow-on-a-chip Unveiled
Device gives scientists a tool to test the effects of new drugs and toxic agents on bone marrow.
New Lab-on-a-Chip Device Overcomes Miniaturisation Problems
The novel technique involves printing a pattern of miniscule droplets of a special solvent onto a gold-coated or glass surface.
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