Author Archive

New YouTube Videos

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Single exposure fabrication and manipulation of 3D hydrogel cell microcarriers 

Fully integrated lab-on-a-disc for simultaneous analysis of biochemistry and immunoassay from whole blood

A self-powered, one-step chip for rapid, quantitative and multiplexed detection of proteins from pinpricks of whole blood

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Top ten most accessed articles in September

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

Cell lysis and DNA extraction of gram-positive and gram-negative bacteria from  whole blood in a disposable microfluidic chip   
Madhumita Mahalanabis, Hussam Al-Muayad, M. Dominika Kulinski, Dave Altman and Catherine M. Klapperich 
Lab Chip, 2009, 9, 2811-2817, DOI: 10.1039/B905065P , Paper 

Programmable diagnostic devices made from paper and tape 
Andres W. Martinez, Scott T. Phillips, Zhihong Nie, Chao-Min Cheng, Emanuel Carrilho, Benjamin J. Wiley and George M. Whitesides 
Lab Chip, 2010, 10, 2499-2504, DOI: 10.1039/C0LC00021C , Paper 

Sickling of red blood cells through rapid oxygen exchange in microfluidic drops 
Paul Abbyad, Pierre-Louis Tharaux, Jean-Louis Martin, Charles N. Baroud and Antigoni Alexandrou 
Lab Chip, 2010, 10, 2505-2512, DOI: 10.1039/C004390G , Paper 

Microstructuring of polymer films for sensitive genotyping by real-time PCR on a centrifugal microfluidic platform 
Maximilian Focke, Fabian Stumpf, Bernd Faltin, Patrick Reith, Dylan Bamarni, Simon Wadle, Claas Müller, Holger Reinecke, Jacques Schrenzel, Patrice Francois, Daniel Mark, Günter Roth, Roland Zengerle and Felix von Stetten 
Lab Chip, 2010, 10, 2519-2526, DOI: 10.1039/C004954A , Paper 

Precompetitive preclinical ADME/Tox data: set it free on the web to facilitate computational model building and assist drug development 
Sean Ekins and Antony J. Williams 
Lab Chip, 2010, 10, 13-22, DOI: 10.1039/B917760B , Perspective 

A microfluidic platform for probing small artery structure and function 
Axel Günther, Sanjesh Yasotharan, Andrei Vagaon, Conrad Lochovsky, Sascha Pinto, Jingli Yang, Calvin Lau, Julia Voigtlaender-Bolz and Steffen-Sebastian Bolz 
Lab Chip, 2010, 10, 2341-2349, DOI: 10.1039/C004675B , Paper 

Predictive model for the size of bubbles and droplets created in microfluidic T-junctions 
Volkert van Steijn, Chris R. Kleijn and Michiel T. Kreutzer 
Lab Chip, 2010, 10, 2513-2518, DOI: 10.1039/C002625E , Paper 

Agarose droplet microfluidics for highly parallel and efficient single molecule emulsion PCR 
Xuefei Leng, Wenhua Zhang, Chunming Wang, Liang Cui and Chaoyong James Yang 
Lab Chip, 2010, 10, 2841-2843, DOI: 10.1039/C0LC00145G , Communication 

Research Highlights 
Petra S. Dittrich 
Lab Chip, 2010, 10, 2495-2496, DOI: 10.1039/C0LC90045A , Highlight 

Electrochemical sensing in paper-based microfluidic devices 
Zhihong Nie, Christian A. Nijhuis, Jinlong Gong, Xin Chen, Alexander Kumachev, Andres W. Martinez, Max Narovlyansky and George M. Whitesides 
Lab Chip, 2010, 10, 477-483, DOI: 10.1039/B917150A , Paper 

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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New YouTube Videos

View the new videos on the Lab on a Chip YouTube site using the links below:

Generation of core-shell microcapsules with three-dimensional focusing device for efficient formation of cell spheroid

Enhancement by optical force of separation in pinched flow fractionation

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New YouTube Videos

View the new videos on the Lab on a Chip YouTube site using the links below:

Sub-pixel resolving optofluidic microscope for on-chip cell imaging

A microdroplet-based shift register

 

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Hybrid electronics get twisted

A stretchable radio frequency (RF) radiation sensor that combines a microfluidic antenna and rigid electronic circuits has been developed by scientists in Sweden. This could open the way to reliable and durable second skin sensors for monitoring health.

Flexible electronics are used in applications such as cameras, computer keyboards and photovoltaic cells. Some success has been found with stretchable antennas but the connection between the stretchable material and the rigid circuits still results in strain and loss of device sensitivity. To make wearable devices, electronics not only need to be flexible but they also need to be stretchable to truly conform to skin. Unfortunately, development from a flexible to a stretchable device has remained an elusive goal.

Now, Shi Cheng and Zhigang Wu from Uppsala University have developed a hybrid technology that combines conventional rigid circuitry with a substrate making a device that can bend, twist and stretch

IMAGE: Flexible microfluidic sensor responds to radio frequency signals

Click here to read the full story

Link to journal article
Microfluidic stretchable RF electronics
Shi Cheng and Zhigang Wu, Lab Chip, 2010
DOI: 10.1039/c005159d

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Top ten most accessed articles in August

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

Cell lysis and DNA extraction of gram-positive and gram-negative bacteria from whole blood in a disposable microfluidic chip 
Madhumita Mahalanabis, Hussam Al-Muayad, M. Dominika Kulinski, Dave Altman and Catherine M. Klapperich 
Lab Chip, 2009, 9, 2811 – 2817, DOI: 10.1039/b905065p 

Programmable diagnostic devices made from paper and tape 
Andres W. Martinez, Scott T. Phillips, Zhihong Nie, Chao-Min Cheng, Emanuel Carrilho, Benjamin J. Wiley and George M. Whitesides 
Lab Chip, 2010, 10, 2499 – 2504, DOI: 10.1039/c0lc00021c 

Microfluidics without pumps: reinventing the T-sensor and H-filter in paper networks 
Jennifer L. Osborn, Barry Lutz, Elain Fu, Peter Kauffman, Dean Y. Stevens and Paul Yager 
Lab Chip, 2010, DOI: 10.1039/c004821f 

Lab-on-a-chip devices as an emerging platform for stem cell biology 
Kshitiz Gupta, Deok-Ho Kim, David Ellison, Christopher Smith, Arnab Kundu, Jessica Tuan, Kahp-Yang Suh and Andre Levchenko 
Lab Chip, 2010, 10, 2019 – 2031, DOI: 10.1039/c004689b, Tutorial Review 

Massively parallel detection of gene expression in single cells using subnanolitre wells 
Yuan Gong, Adebola O. Ogunniyi and J. Christopher Love 
Lab Chip, 2010, 10, 2334 – 2337, DOI: 10.1039/c004847j, Communication 

Dynamics of microfluidic droplets 
Charles N. Baroud, Francois Gallaire and Rémi Dangla 
Lab Chip, 2010, 10, 2032 – 2045, DOI: 10.1039/c001191f, Critical Review 

Precompetitive preclinical ADME/Tox data: set it free on the web to facilitate computational model building and assist drug development 
Sean Ekins and Antony J. Williams 
Lab Chip, 2010, 10, 13 – 22, DOI: 10.1039/b917760b, Perspective 

Electrochemical sensing in paper-based microfluidic devices 
Zhihong Nie, Christian A. Nijhuis, Jinlong Gong, Xin Chen, Alexander Kumachev, Andres W. Martinez, Max Narovlyansky and George M. Whitesides 
Lab Chip, 2010, 10, 477 – 483, DOI: 10.1039/b917150a

Vortex-assisted DNA delivery 
Jun Wang, Yihong Zhan, Victor M. Ugaz and Chang Lu 
Lab Chip, 2010, 10, 2057 – 2061, DOI: 10.1039/c004472e 

Shrink film patterning by craft cutter: complete plastic chips with high resolution/high-aspect ratio channel 
Douglas Taylor, David Dyer, Valerie Lew and Michelle Khine 
Lab Chip, 2010, 10, 2472 – 2475, DOI: 10.1039/c004737f, Technical Note 

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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Shining light on sperm viability

Optoelectronic tweezers are able to distinguish between live and dead sperm cells, even if they aren’t moving, say US scientists.

An important part of in vitro fertilisation (IVF) techniques is selecting and injecting an individual sperm cell into an egg. The quality of the chosen sperm is critical to the success of the procedure and is currently assessed by an operator looking at sperm movement under a microscope. However, sperm that don’t move are not necessarily dead, and it is nearly impossible to assess their viability visually.

 

To combat this problem, Aaron Ohta at the University of Hawaii and his team have demonstrated that optoelectronic tweezers – which use a combination of light and electric fields to control microscopic objects – can distinguish and sort between live and dead cells, irrespective of mobility.

Read the full story here


Link to journal article

Motile and non-motile sperm diagnostic manipulation using optoelectronic tweezers
Aaron T. Ohta, Maurice Garcia, Justin K. Valley, Lia Banie, Hsan-Yin Hsu, Arash Jamshidi, Steven L. Neale, Tom Lue and Ming C. Wu, Lab Chip, 2010, DOI: 10.1039/c0lc00072h

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Micropatch detects disease biomarkers in skin

Scientists in Australia have built a microneedle device capable of detecting disease-specific proteins directly from the skin.

Normally when a clinical sample such as blood is needed to screen a patient for disease, it has to be taken by a specially trained healthcare practitioner using a needle and syringe. The sample is then clotted, centrifuged and stored under controlled conditions ready for analysis.

Now Mark Kendall and his colleagues from the University of Queensland, Australia have found an alternative pain-free method which dispenses with invasive needles, specialist training and sample processing. Kendall incorporated a small chip coated with sharp, densely packed microneedles into a patch that can be applied to the skin. The sharp gold-coated silicon needles are less than 1 mm in length and are able to capture and sample protein antibodies directly from the skin.

Read the full story here.

Link to journal article
Surface-modified microprojection arrays for intradermal biomarker capture, with low non-specific protein binding
Simon R. Corrie, Germain J. P. Fernando, Michael L. Crichton, Marion E. G. Brunck, Chris D. Anderson and Mark A. F. Kendall, Lab Chip, 2010
DOI: 10.1039/c0lc00068j

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Lab on a Chip Emerging Investigators themed issue

Issue 18 of Lab on a Chip is a special themed issue dedicated to Emerging Investigators in microfluidics guest-edited by Aaron Wheeler and Amy Herr.

The range of topics covered in this special issue of Lab on a Chip highlights the breadth of challenges currently being tackled by emerging investigators in the field. In the words of Guest Editor Amy Herr: “This issue paints a picture of the problems that the new generation of scientists in our field identifies as being important—and the broad impact their contributions are making across a wide range of disciplines”. Take a look now at this issue.

 

Here are a few highlights from the issue:

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Top ten most accessed articles in July

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

Lensfree microscopy on a cellphone
Derek Tseng, Onur Mudanyali, Cetin Oztoprak, Serhan O. Isikman, Ikbal Sencan, Oguzhan Yaglidere and Aydogan Ozcan
Lab Chip, 2010, 10, 1787-1792, DOI: 10.1039/C003477K

Vortex-assisted DNA delivery
Jun Wang, Yihong Zhan, Victor M. Ugaz and Chang Lu
Lab Chip, 2010, 10, 2057-2061, DOI: 10.1039/C004472E

Centrifugal microfluidics for biomedical applications
Robert Gorkin, Jiwoon Park, Jonathan Siegrist, Mary Amasia, Beom Seok Lee, Jong-Myeon Park, Jintae Kim, Hanshin Kim, Marc Madou and Yoon-Kyoung Cho
Lab Chip, 2010, 10, 1758-1773, DOI: 10.1039/B924109D

Cell lysis and DNA extraction of gram-positive and gram-negative bacteria from whole blood in a disposable microfluidic chip
Madhumita Mahalanabis, Hussam Al-Muayad, M. Dominika Kulinski, Dave Altman and Catherine M. Klapperich
Lab Chip, 2009, 9, 2811-2817, DOI: 10.1039/B905065P

Digital PCR on a SlipChip
Feng Shen, Wenbin Du, Jason E. Kreutz, Alice Fok and Rustem F. Ismagilov
Lab Chip, 2010, Advance Article, DOI: 10.1039/C004521G

Hydrophilic PDMS microchannels for high-throughput formation of oil-in-water microdroplets and water-in-oil-in-water double emulsions
Wolfgang-Andreas C. Bauer, Martin Fischlechner, Chris Abell and Wilhelm T. S. Huck
Lab Chip, 2010, 10, 1814-1819, DOI: 10.1039/C004046K

A microfluidic platform for probing small artery structure and function
Axel Günther, Sanjesh Yasotharan, Andrei Vagaon, Conrad Lochovsky, Sascha Pinto, Jingli Yang, Calvin Lau, Julia Voigtlaender-Bolz and Steffen-Sebastian Bolz
Lab Chip, 2010, 10, 2341-2349, DOI: 10.1039/C004675B

Simultaneous fabrication of PDMS through-holes for three-dimensional microfluidic applications
Bobak Mosadegh, Mayank Agarwal, Yu-suke Torisawa and Shuichi Takayama
Lab Chip, 2010, 10, 1983-1986, DOI: 10.1039/C003590D

Sickling of red blood cells through rapid oxygen exchange in microfluidic drops
Paul Abbyad, Pierre-Louis Tharaux, Jean-Louis Martin, Charles N. Baroud and Antigoni Alexandrou
Lab Chip, 2010, Advance Article, DOI: 10.1039/C004390G

Patterning microfluidic device wettability using flow confinement
Adam R. Abate, Julian Thiele, Marie Weinhart and David A. Weitz
Lab Chip, 2010, 10, 1774-1776, DOI: 10.1039/C004124F

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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