Navigation Links
Parallel 'nano-soldering' technique chosen for year's top-50 by Nanotech Briefs
Date:9/5/2008

You should have so much patience to solder nanowires to nanoelectrodes. Talk about fine work. (A nanometer is a billionth of a meter.)

That's why a new electroplating process that simultaneously joins many silicon nanowires to many prepatterned electrodes was selected for a 2008 Nano 50 Award by Nanotech Briefs.

The process removes many difficulties.

"All of the electroplating is done in parallel," says Sean Hearne, a Sandia National Laboratories researcher at the Center for Integrated Technologies (CINT). "Everywhere there's a metal contact, the electroplated nickel grows over the nanowire, capturing it."

CINT is a DOE Office of Science nanotechnology center led by Sandia and Los Alamos National Laboratory.

Previous methods connected electrodes to nanowires one contact at a time. That kind of service may sound great in stockbroker ads; in a lab, it's merely tedious.

Other methods required complex processes that included masking, metal deposition, and stripping, which often damaged the nano-wires.

The process could be important for commercial applications of semiconducting nanowires used in electronic sensor arrays, because it allows for the parallel processing of millions of nano-wires on a single wafer at lower cost than previous lithographic techniques.

In the team's approach, microarrays of composite gold electrodes were lithographically formed on oxidized silicon substrates, followed by electric-field-assisted alignment of silicon nanowires between the electrodes.

The nanowire ends were then embedded in nickel by selective electrodeposition over the prepatterned electrodes. Annealing to 300 C provided good electrical contacts for the doped nanowires.

The approach provides a parallel, maskless method to establish metal contacts to nanowires without need of high-resolution electron beam lithography for electrical and mechanical applications.

Hearne, who developed the electroplating process, worked with Arizona State University research leads and Tom Picraux, CINT chief scientist at Los Alamos National Laboratory. The overall work was led by former ASU School of Materials student Sarang Ingole, an advisee of Picraux. It was part of an ASU User Proposal with CINT titled "Doped SiGe Nanowires for Functional Nanodevices." The subject was proposed by principal investigator Steve Goodnick and co-principal investigator Clarence Tracy, both at ASU.

The work, titled "Directed Assembly of Nanowire-Metal Contacts," was chiefly conducted at CINT's Los Alamos and Albuquerque sites. It appeared in a July 2007 issue of Applied Physics Letters as both a Letter and a cover image.


'/>"/>

Contact: Neal Singer
nsinger@sandia.gov
505-845-7078
DOE/Sandia National Laboratories
Source:Eurekalert

Related biology technology :

1. REvolution Computing Offers Hands-On Tutorial of NWS Parallel Computing Environment at BioC 2008
2. New technique producing small things in large quantities
3. New DNA-based technique for assembly of nano- and micro-sized particles
4. NIH Announces Advanced Cell Technologys Single Cell Embryo Biopsy Technique as a Means to Derive Embryonic Stem Cells to be Considered for Federal Funding
5. New technique can be breakthrough for early cancer diagnosis
6. University of Leicester scientists discover technique to help friendly bacteria
7. Glycominds Joins Biomolecular Photonic (BMP) Consortium to Develop New Molecular Imaging Technique
8. Doping technique brings nanomechanical devices into the semiconductor world
9. Cardica and Intuitive Surgical to Host Educational Symposium on Advanced Techniques and Technologies in Robotic Coronary Revascularization and Mitral Valve Repair
10. DNA technique yields 3-D crystalline organization of nanoparticles
11. Unique infrared technique finds applications in nanoscience
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2017)... China Biologic Products, Inc. (NASDAQ: CBPO) ("China Biologic" or the ... today announced its financial results for the fourth quarter and ... Financial Highlights Total sales in the ... or increased by 13.6% in USD terms to $77.6 million ... Gross profit increased by 13.3% to $46.8 million ...
(Date:2/23/2017)... and NEW YORK , ... Lumeon , a leading digital health company, ... a provider of telemedicine and remote patient monitoring, ... for telemedicine reimbursements.  DN Telehealth ... patients, in real-time, extending consultations beyond a physical ...
(Date:2/23/2017)... TORONTO , Feb. 23, 2017 /PRNewswire/ - The ... Institute for Cancer Research (OICR) are pleased to report ... Series A financing, with Johnson & Johnson Innovation – ... investors include venture groups HealthCap, TPG Biotechnology Partners, and ... ...
(Date:2/23/2017)... SEATTLE , Feb. 23, 2017  Seattle,s upscale Capitol ... like a strange place for a head lice treatment salon ... nestled between a Tuscan restaurant and a French bistro on ... it,s perfect. "We aren,t just any old lice clinic, we ... to feel comfortable, and release some of the stigma associated ...
Breaking Biology Technology:
(Date:2/8/2017)... 2017  Aware, Inc. (NASDAQ: AWRE ), a ... results for its quarter and year ended December 31, 2016. ... was $3.9 million compared to $6.9 million in the same ... 2016 was $0.6 million compared to $2.6 million in the ... of 2016 was $0.5 million, or $0.02 per diluted share, ...
(Date:2/7/2017)... , Feb. 7, 2017 Zimmer Biomet ... in musculoskeletal healthcare, will present at the LEERINK Partners ... York Palace Hotel on Wednesday, February 15, 2017 at ... webcast of the presentation can be accessed at ... following the conference via Zimmer Biomet,s Investor Relations website ...
(Date:2/2/2017)... 2017   TapImmune, Inc. (NASDAQ: ... in the development of innovative peptide and gene-based ... and metastatic disease, announced today it has successfully ... a second clinical lot of TPIV 200, the ... The manufactured vaccine product will be used to ...
Breaking Biology News(10 mins):