Archive for the ‘News’ Category

Point-of-care DVD HIV diagnostic device

Development of a point-of-care DVD HIV diagnostic device published in Lab on a Chip has been featured on The Guardian’s Global Development Network.

The team led by Aman Russom at KTH Royal Institute of Technology, Sweden present a new lab on a DVD for rapid, cheap HIV diagnosis. They modify a commercial DVD drive for this purpose, giving a laser scanning microscope termed DVD-LSM. 

A multi-layer disc is combined with the modified DVD reader that allows temperature control. A fluidic polymer disc bonded to the DVD enables sample processing. Fluid propulsion is incorporated, a photodiode array is present for detection and all of the software for processing  is driven by a PC. The system enables imaging of biomolecules to 1  μm resolution.

A low level of CD4+ cells is the marker used to decide upon HIV treatment. The surface of the disc is functionalised with anti-CD4 antibodies to allow the system to detect and count stained CD4+ cells.

The combination of robust fluidic sample handling, detection capability and sub-micron resolution imaging means this fully integrated device is a hugely important step towards practical point-of-care Lab-on-DVD diagnostics. The team aim to reduce the sample preparation steps to simplify the procedure.

You can read the Guardian Global Development Network article here or skip straight to the full fascinating and clearly written Lab on a Chip article.

Lab-on-DVD: standard DVD drives as a novel laser scanning microscope for image based point of care diagnostics
Harisha Ramachandraiah, Mary Amasia, Jackie Cole, Paul Sheard, Simon Pickhaver, Chris Walker, Valtteri Wirta, Preben Lexow, Richard Lione and Aman Russom 
DOI: 10.1039/C3LC41360H

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Research Highlights writer wins CRS Young Investigator Award!

 We’re extremely pleased to report that Ali Khademhosseini, the writer of Research Highlights articles in Lab on a Chip, has been awarded the Young Investigator Award from the Controlled Release Society.

The award is for a young CRS member who has made an outstanding contribution to the science of controlled release and drug delivery. Ali will be presented with the award in July at the annual CRS meeting in Hawaii.

View some of his most recent Research Highlights articles here:

Research highlights
Imee G. Arcibal, Donald M. Cropek, Mehmet R. Dokmeci and Ali Khademhosseini 
DOI: 10.1039/C3LC90037A

Research highlights
João Ribas, Mark W. Tibbitt, Mehmet R. Dokmeci and Ali Khademhosseini
DOI: 10.1039/C3LC90032K

Research highlights
Šeila Selimović, Mehmet R. Dokmeci and Ali Khademhosseini
DOI: 10.1039/C3LC90025H

Research highlights
Šeila Selimović, Mark W. Tibbitt, Mehmet R. Dokmeci and Ali Khademhosseini
DOI: 10.1039/C3LC90018E

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NMC 2013: 10th International Workshop on Nanomechanical Sensing

The 10th International Workshop on Nanomechanical Sensing will be taking place from next Wednesday 1st May until 3rd May in Stanford, California USA.

This year the workshop is focused on interdisciplinary research on and with nanoscale sensors.

NMC started in 2004 as the “nano mechanical cantilever” meeting but has grown along with innovations in nanomechanics and probing at the nanoscale. NMC focuses on new developments, investigations, applications of cantilever-based sensors, cantilever systems engineering and the mission has expanded to all modes of nanomechanical sensing to include applications such as chemical sensing, biosensing, scanning probes and metrologies, optomechanics, nanomechanics, resonant sensing, and the associated modeling and experiments, etc.

NMC brings together companies and academia to present their latest results in a lively and personal atmosphere. NMC2013 will provide a single session technical program with the latest research on nanosensing including renowned invited speakers, contributed oral and poster presentations, and excellent networking opportunities.

http://www.nmc2013.org/

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Top ten most accessed LOC articles in January 2013

This month sees the following articles in Lab on a Chip that are in the top ten most accessed:-

Smart Polymeric Microfluidics Fabricated by Plasma Processing: Controlled Wetting, Capillary Filling, Hydrophobic Valving 
Katerina Tsougeni, Dimitris Papageorgiou,  Angeliki Tserepi and Evangelos Gogolides 
Lab Chip, 2010, 10, 462-469 
DOI: 10.1039/B916566E  

Probing circulating tumor cells in microfluidics 
Peng Li, Zackary S. Stratton, Ming Dao, Jerome Ritz and Tony Jun Huang 
Lab Chip, 2013, 13, 602-609 
DOI: 10.1039/C2LC90148J  
 
A polymer-based neural microimplant for optogenetic applications: design and first in vivo study 
Birthe Rubehn, Steffen B. E. Wolff, Philip Tovote, Andreas Lüthi and Thomas Stieglitz  
Lab Chip, 2013, 13, 579-588 
DOI: 10.1039/C2LC40874K  

Pen microfluidics: rapid desktop manufacturing of sealed thermoplastic microchannels 
Omid Rahmanian and Don L. DeVoe 
Lab Chip, 2013, 13, 1102-1108 
DOI: 10.1039/C2LC41057E  
 
Fundamentals of Inertial Focusing of Microparticles in a Rectangular Microchannel 
Jian Zhou and Ian Papautsky  
Lab Chip, 2013, 13, 1121-1132 
DOI: 10.1039/C2LC41248A 

Advances in Microfluidics-based Experimental Methods for Neuroscience Research 
Jae Woo Park, Hyung Joon Kim, Myeong Woo Kang and Noo Li Jeon 
Lab Chip, 2013, 13, 509-521 
DOI: 10.1039/C2LC41081H  
 
Adhesive-based bonding technique for PDMS microfluidic devices 
C. Shea Thompson and Adam R. Abate  
Lab Chip, 2013, 13, 632-635 
DOI: 10.1039/C2LC40978J   

Engineered cell culture substrates for axon guidance studies: moving beyond proof of concept 
Joannie Roy, Timothy E. Kennedy and Santiago Costantino 
Lab Chip, 2013, 13, 498-508 
DOI: 10.1039/C2LC41002H  

Label-Free DC Impedance-based Microcytometer for Circulating Rare Cancer Cell Counting 
Hyoungseon Choi, Kwang Bok Kim, Chang Su Jeon, Inseong Hwang, Saram Lee, Hark Kyun Kim, Hee Chan Kim and Taek Dong Chung  
Lab Chip, 2013, 13, 970-977 
DOI: 10.1039/C2LC41376K  

Microfluidic chemostat for measuring single cell dynamics in bacteria 
Zhicheng Long, Eileen Nugent, Avelino Javer, Pietro Cicuta, Bianca Sclavi, Marco Cosentino Lagomarsino and Kevin D. Dorfman 
Lab Chip, 2013, 13, 947-954 
DOI: 10.1039/C2LC41196B  

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to Lab on a Chip? Then why not submit to us today or alternatively email us your suggestions.

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Focus writer Tony Huang recognised for outstanding research

Tony Huang, writer of a series of Lab on a Chip Focus review articles, has been awarded a 2013 Faculty Scholar Medal by his institution, Penn State University. This Medal is awarded in recognition of his outstanding research in the area of microfluidic engineering, in particular acoustofluidics. His most recent work on optoacoustic tweezers is available to read in Lab on a Chip:

Optoacoustic tweezers: a programmable, localized cell concentrator based on opto-thermally generated, acoustically activated, surface bubbles
Yuliang Xie, Chenglong Zhao, Yanhui Zhao, Sixing Li, Joseph Rufo, Shikuan Yang, Feng Guo and Tony Jun Huang
DOI: 10.1039/C3LC00043E

Tony continues to write a series of varied and fascinating Focus articles published in Lab on a Chip on a regular basis, with topics from the unconventional uses of microfluidic technologies and applications of acoustofluidics through to imaging, circulating tumour cells, diagnostics and mechanical biomarkers:

Unconventional microfluidics: expanding the discipline
Ahmad Ahsan Nawaz, Xiaole Mao, Zackary S. Stratton and Tony Jun Huang
DOI: 10.1039/C3LC90023A

Probing circulating tumor cells in microfluidics
Peng Li, Zackary S. Stratton, Ming Dao, Jerome Ritz and Tony Jun Huang
DOI: 10.1039/C2LC90148J

Optofluidic imaging: now and beyond
Yanhui Zhao, Zackary S. Stratton, Feng Guo, Michael Ian Lapsley, Chung Yu Chan, Sz-Chin Steven Lin and Tony Jun Huang
DOI: 10.1039/C2LC90127G

Exploiting mechanical biomarkers in microfluidics
Xiaole Mao and Tony Jun Huang
DOI: 10.1039/C2LC90100E

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LOC Issue 8 now online: Art in Science

The winner of the 2012 Art in Science Award presented at October’s MicroTas meeting was Yi Zhang, from Johns Hopkins University, USA and the striking winning image is featured on the outside front cover of Issue 8!

Read what’s in the issue here

A description of the winning image and advice on what makes a worthy Art in Science submission are discussed in the editorial by Michael Gaitan from NIST, USA, and Harp Minhas, Editor of LOC, who were part of the award selection committee.

The Art in Science of microTAS
Michael Gaitan and Harp Minhas
DOI: 10.1039/C3LC90026F


In keeping with the artistry of the front cover, work from Shoji Takeuchi et al. in Japan is featured on the inside front cover of Issue 8. In this paper, they address the problem of how to exchange the solution within a droplet for a new solution, for example to introduce membrane proteins or to wash-out applied chemicals during ion channel analysis. They use microfluidic channels to carry out solution exchange by droplet contact in under 20 seconds with the membrane still intact. Cover articles are free to access for 6 weeks*!

Droplet-based lipid bilayer system integrated with microfluidic channels for solution exchange
Yutaro Tsuji, Ryuji Kawano, Toshihisa Osaki, Koki Kamiya, Norihisa Miki and Shoji Takeuchi
DOI: 10.1039/C3LC41359D


The back cover features the laboratory of Sergey Shevkoplyas at Tulane University, USA. The communication by this laboratory describes their simple point-of-care test for sickle cell disease using characteristic patterns made by blood samples on paper, which can even differentiate between sickle cell disease and those healthy people with sickle cell traits.

A simple, rapid, low-cost diagnostic test for sickle cell disease
Xiaoxi Yang, Julie Kanter, Nathaniel Z. Piety, Melody S. Benton, Seth M. Vignes and Sergey S. Shevkoplyas
DOI: 10.1039/C3LC41302K


This issue also includes plenty of HOT research and a focus article from Tony Huang on the more unconventional applications of microfluidics:

Unconventional microfluidics: expanding the discipline
Ahmad Ahsan Nawaz, Xiaole Mao, Zackary S. Stratton and Tony Jun Huang
DOI: 10.1039/C3LC90023A

Programmable parylene-C bonding layer fluorescence for storing information on microfluidic chips
Ata Tuna Ciftlik, Diego Gabriel Dupouy and Martin A. M. Gijs
DOI: 10.1039/C3LC41280F

Engineering of functional, perfusable 3D microvascular networks on a chip
Sudong Kim, Hyunjae Lee, Minhwan Chung and Noo Li Jeon
DOI: 10.1039/C3LC41320A

In situ synthesis of silver nanoparticle decorated vertical nanowalls in a microfluidic device for ultrasensitive in-channel SERS sensing
Joseph Parisi, Liang Su and Yu Lei
DOI: 10.1039/C3LC41249K

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Webinar: The power of modern HPTLC

Join Chemistry World and Advion for a webcast on the latest developments in HPTLC technology.

WHAT: Professor Morlock from the University of Giessen, Germany, will give an overview of current HPTLC methodology, explore some examples of HPTLC-MS coupling and review other current hyphenations in HPTLC. By the end of this free webinar, you will be able to:
- Recognise the power of modern HPTLC
- Learn about current hyphenations in HPTLC
- Understand the principle of elution-based HPTLC-MS
- Recognise how HPTLC hyphenations efficiently support analyses

WHEN: Wednesday, 20 March 2013 – 15:00 GMT

HOW: Click here to register (free)

Register today, even if you can’t make it on 20th March, and we’ll send you a link to the recorded webinar.

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Worried about food allergens? There’s an app for that

Building on their work on a mobile phone – or cell phone – app to detect bacteria, US scientists have now adapted the technology to detect allergens in foods.

The iTube platform uses colorimetric assays and a smartphone to reveal the presence of allergens in food samples

The iTube platform uses colorimetric assays and a smartphone to reveal the presence of allergens in food samples

The device, developed by Aydogan Ozcan and his colleagues at the University of California, Los Angeles, is a compact and lightweight attachment for a mobile phone’s camera unit, which is used to image tubes containing food samples illuminated by light emitting diodes. ‘If there is an allergen in the sample, the transmitted light intensity changes,’ says Ozcan. ‘By quantifying the transmitted light intensity using a smart application on the phone, we can quantify the amount of allergen in the sample in parts per million.’

 To read the full article, visit Chemistry World.

A personalized food allergen testing platform on a cellphone
Ahmet Coskun, Justin Wong, Delaram Khodadadi, Richie Nagi, Andrew Tey and Aydogan Ozcan
Lab Chip, 2012, Accepted Manuscript
DOI: 10.1039/C2LC41152K

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Top ten most accessed articles in August 2012

The following articles were in the Lab on a Chip top ten most accessed for the month of August:

Microfluidic designs and techniques using lab-on-a-chip devices for pathogen detection for point-of-care diagnostics
Amir M. Foudeh, Tohid Fatanat Didar, Teodor Veres and Maryam Tabrizian
Lab Chip, 2012, 12, 3249-3266
DOI: 10.1039/C2LC40630F

Configurable 3D-Printed millifluidic and microfluidic ‘lab on a chip’ reactionware devices
Philip J. Kitson, Mali H. Rosnes, Victor Sans, Vincenza Dragone and Leroy Cronin
Lab Chip, 2012, 12, 3267-3271
DOI: 10.1039/C2LC40761B

Electrokinetics with “paper-and-pencil” devices
Pratiti Mandal, Ranabir Dey and Suman Chakraborty
Lab Chip, 2012, 12, 4026-4028
DOI: 10.1039/C2LC40681K

Microfluidic evaporator for on-chip sample concentration
Xavier Casadevall i Solvas, Vladimir Turek, Themistoklis Prodromakis and Joshua B. Edel
Lab Chip, 2012, 12, 4049-4054
DOI: 10.1039/C2LC40746A

Joining plasmonics with microfluidics: from convenience to inevitability
Jaeyoun Kim
Lab Chip, 2012, 12, 3611-3623
DOI: 10.1039/C2LC40498B

A novel microfluidic microplate as the next generation assay platform for enzyme linked immunoassays (ELISA)
Junhai Kai, Aniruddha Puntambekar, Nelson Santiago, Se Hwan Lee, David W. Sehy, Victor Moore, Jungyoup Han and Chong H. Ahn
Lab Chip, 2012, 12, 4257-4262
DOI: 10.1039/C2LC40585G

Optical imaging techniques in microfluidics and their applications
Jigang Wu, Guoan Zheng and Lap Man Lee
Lab Chip, 2012, 12, 3566-3575
DOI: 10.1039/C2LC40517B

Concentration gradient generation of multiple chemicals using spatially controlled self-assembly of particles in microchannels
Eunpyo Choi, Hyung-kwan Chang, Chae Young Lim, Taesung Kim and Jungyul Park
Lab Chip, 2012, 12, 3968-3975
DOI: 10.1039/C2LC40450H

Frontiers of optofluidics in synthetic biology
Cheemeng Tan, Shih-Jie Lo, Philip R. LeDuc and Chao-Min Cheng
Lab Chip, 2012, 12, 3654-3665
DOI: 10.1039/C2LC40828G

Electrode-free picoinjection of microfluidic drops
Brian O’Donovan, Dennis J. Eastburn and Adam R. Abate
Lab Chip, 2012, 12, 4029-4032
DOI: 10.1039/C2LC40693D

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to Lab on a Chip? Then why not submit to us today or alternatively email us your suggestions.

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Lab on a Chip gives prestigious awards at µTAS 2012

This year’s MicroTAS conference was held in October, at the Okinawa Convention Center in Okinawa, Japan.

As in previous years, Harp Minhas, Editor of Lab on a Chip, was in attendance at the conference to announce the prestigious Lab on a Chip awards, which include the Pioneers of Miniaturisation Lectureship (supported by Corning Inc), the Widmer Young Researcher Poster Prize, and the Art in Science Award (co-sponsored by NIST).

The Widmer Young Researcher Poster Prize

This year’s winner of the Widmer Young Researcher Poster Prize was Klaus Eyer from Professor Petra Dittrich’s lab at ETH Zürich, with his poster entitled ‘Single Cell ELISA’.

Left to right: David Juncker (Poster award chair), Klaus Eyer (winner), Harp Minhas (Lab on a Chip)

Art in Science Award

The Art in Science Award is given each year “to draw attention to the aesthetic value in scientific illustrations while still conveying scientific merit.” This year’s award was presented to Yi Zhang, a PhD student from the Department of Biomedical Engineering, Johns Hopkins University School of Medicine, USA.

Left to right: Michael Gaitan (NIST), Yi Zhang (winner), Harp Minhas (Lab on a Chip)

The image, entitled ‘Stretching the Rainbow‘, shows a droplet with multiple rainbow stripes being stretched by the magnetic particle on a surface energy traps (SETs)-enabled magnetic digital microfluidic platform. In this particular scenario, the droplet is immobilized by the SET while the magnetic particles are trying to split from the droplet. The rainbow is the natural colour resulting from the diffraction pattern caused by a DVD disc, on which the droplet sits.

Stretching the Rainbow

Pioneers of Miniaturisation Lectureship

The Pioneers of Miniaturisation Lectureship recognises outstanding achievements and significant contributions to the understanding and advancement of micro- and nano-scale science. This year, the Lectureship was awarded to Professor Andrew deMello at ETH Zurich, Switzerland. Among his many achievements and awards, Andrew first demonstrated combinatorial chemistry and controlled nanoparticle synthesis in continuous flow microfluidic devices; co-authored the first demonstration of continuous flow PCR, which has over 750 citations to date; pioneered the application of high-contract fluorescence lifetime imaging to microfluidic environments; founded Molecular Vision Ltd, an in vitro diagnostic company, providing point of care tests for cardiovascular and kidney disease; and has published over 40 articles on droplet-based microfluidics since 2007.

Left to right: Harp Minhas (Lab on a Chip), Andrew deMello (winner), Po Ki Yuen (Corning Inc)

Please join us at Lab on a Chip in congratulating all of our prize winners!

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