Navigation Links
Building a biochemistry lab on a chip
Date:2/12/2013

Miniaturized laboratory-on-chip systems promise rapid, sensitive, and multiplexed detection of biological samples for medical diagnostics, drug discovery, and high-throughput screening. Using micro-fabrication techniques and incorporating a unique design of transistor-based heating, researchers at the University of Illinois at Urbana-Champaign are further advancing the use of silicon transistor and electronics into chemistry and biology for point-of-care diagnostics.

Lab-on-a-chip technologies are attractive as they require fewer reagents, have lower detection limits, allow for parallel analyses, and can have a smaller footprint.

"Integration of various laboratory functions onto microchips has been intensely studied for many years," explained Rashid Bashir, an Abel Bliss Professor of electrical and computer engineering and of bioengineering at Illinois. "Further advances of these technologies require the ability to integrate additional elements, such as the miniaturized heating element, and the ability to integrate heating elements in a massively parallel format compatible with silicon technology.

"In this work, we demonstrated that we can heat nanoliter volume droplets, individually and in an array, using VLSI silicon based devices, up to temperatures that make it interesting to do various biochemical reactions within these droplets."

"Our method positions droplets on an array of individual silicon microwave heaters on chip to precisely control the temperature of droplets-in-air, allowing us to perform biochemical reactions, including DNA melting and detection of single base mismatches," said Eric Salm, first author of the paper, "Ultralocalized thermal reactions in subnanoliter droplets-in-air," published in the Proceedings of the National Academy of Sciences (PNAS) on February 12.

According to Salm, approaches to perform localized heating of these individual subnanoliter droplets can allow for new applications that require parallel, time-, and space multiplex reactions on a single integrated circuit. Within miniaturized laboratory-on-chips, static and dynamic droplets of fluids in different immiscible media have been used as individual vessels to perform biochemical reactions and confine the products.

"This technology makes it possible to do cell lysing and nucleic acid amplification reactions within these individual droplets the droplets are the reaction vessels or cuvettes that can be individually heated," Salm added.

"We also demonstrate that ssDNA probe molecules can be placed on heaters in solution, dried, and then rehydrated by ssDNA target molecules in droplets for hybridization and detection," said Bashir, who is director of the Micro and Nanotechnology Laboratory at Illinois. "This platform enables many applications in droplets including hybridization of low copy number DNA molecules, lysing of single cells, interrogation of ligandreceptor interactions, and rapid temperature cycling for amplification of DNA molecules.

"Notably," Bashir added, "our miniaturized heater could also function as dual heater/sensor elements, as these silicon-on-insulator nanowire or nanoribbon structures have been used to detect DNA, proteins, pH, and pyrophosphates.

By using microfabrication techniques and incorporating the unique design of transistor-based heating with individual reaction volumes, 'laboratory-on-a-chip' technologies can be scaled down to 'laboratory-on-a-transistor' technologies as sensor/heater hybrids that could be used for point-of-care diagnostics."


'/>"/>

Contact: Rashid Bashir
rbashir@illinois.edu
217-333-3097
University of Illinois College of Engineering
Source:Eurekalert

Related medicine news :

1. American Association of Radon Scientists and Technologists (AARST) Releases Nation's First Standard for Mitigating Radon (Radioactivity) in Multifamily Buildings
2. Visual Impact Muscle Building Review Revealed Insight View Of Muscle Enlargement By Rusty Moore In His Program Visual Impact Muscle Building
3. Burn the Fat, Feed the Muscle: Review Examining Tom Venuto’s Training Program Released by QuickMuscleBuildingTips.com
4. Netmark Divulges Their Link Building Strategies
5. Hyper Gain: Review Examining ASR's Creatine Supplement Released By QuickMuscleBuildingTips.com
6. Visual Impact Muscle Building: Review Examining Rusty Moore's Training Program Released By DietsAndFitnessGuides.com
7. Rebuilding blood vessels through gene therapy
8. Steering stem cells to become 2 different building blocks for new blood vessels
9. Dental Marketing Formula.com has been Featured in The LA Daily News for their Specialized Practice Building Solutions in the Dental Industry
10. UC research explores relationship-building program for male same-sex couples
11. Rebuilding a whole heart for children born with only half of 1
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2017)... ... , ... Ross Insurance Agency ( http://www.rossinsuranceagency.com ) saves clients ... (FEMA) recent update of flood zones, more people than ever are in flood ... to reflect the actual risk in flood zone areas during a time when ...
(Date:6/23/2017)... (PRWEB) , ... June 23, 2017 , ... ... management, financial planning, and related services to families and business owners in and ... charity drive to benefit senior citizens in the area. , Meals on Wheels ...
(Date:6/23/2017)... ... June 23, 2017 , ... Radabaugh & Associates, a ... and business owners in North Central West Virginia, is embarking on a cooperative ... abled residents in the region. , The Stepping Stones organization offers a series ...
(Date:6/22/2017)... ... June 22, 2017 , ... Plastic Surgery Associates is proud to ... for 2017. Each year, research and information firm, Castle Connolly, releases their list of ... 2015, this marks the 3rd time that Dr. Canales has been recognized ...
(Date:6/22/2017)... ... June 22, 2017 , ... Children’s National Health ... Association (AHA) to launch a Rheumatic Heart Disease Center, with the goal of ... rheumatic heart disease (RHD) in high-risk, financially disadvantaged countries and low-income communities across ...
Breaking Medicine News(10 mins):
(Date:6/9/2017)... AirXpanders, Inc. (ASX: AXP) (AirXpanders or Company), ... sale and distribution of the AeroForm® Tissue Expander System, ... commercial roll-out in the United States ... hundred (100) medical institutions and health systems, located throughout ... alternative for women who choose reconstructive surgery following a ...
(Date:6/8/2017)... 8, 2017  StatLab Medical Products ("StatLab" ... manufacturer of diagnostic supplies for the anatomic ... & Company LP ("Cressey & Company"), a ... growth-focused investment in the Company. Cressey & ... from selling shareholder, Prairie Capital, L.P., with ...
(Date:6/5/2017)... , June 5, 2017 The Cincinnati ... of Diplomat Pharmacy, Inc. (NYSE: DPLO), has been awarded a ... Enquirer . Results are based on an employee ... organizational health and workplace improvement. The survey measures several aspects ... ...
Breaking Medicine Technology: