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Saturday, June 12, 2010

B Engineers turn the stickiness of gold nanoparticles into an advantage

http://www.nanowerk.com/news/newsid=16678.php

B Free webinar on the use of atomic force microscopy to characterize biomaterials at the nanoscale

http://www.nanowerk.com/news/newsid=16680.php

Wednesday, June 9, 2010

B Fwd: MEMS-talk Digest, Vol 92, Issue 7

---------- Forwarded message ----------
From: <mems-talk-request@memsnet.org>
Date: Jun 9, 2010 11:01 AM
Subject: MEMS-talk Digest, Vol 92, Issue 7
To: <mems-talk@memsnet.org>

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Today's Topics:

  1. Re: CF4 : O2 RIE of silicon, variability (Daniel Lloyd)
  2. Re: DRIE Simulator (javad sharifi)
  3. Re: CF4 : O2 RIE of silicon, variability (Jie Zou)


---------- Forwarded message ----------
From: "Daniel Lloyd" <DLloyd@laseroptical.co.uk>
To: "General MEMS discussion" <mems-talk@memsnet.org>, "tele992001@yahoo.com" <tele992001@yahoo.com>
Date: Tue, 08 Jun 2010 20:52:38 +0100
Subject: Re: [mems-talk] CF4 : O2 RIE of silicon, variability
Hi K.C,

Do you mean at various points on one sample or between different samples? I've found in the past that due to edge/loading effects the etch rates (and particularly selectivity's) can vary across a sample. In these instances its often apparent as a series of rings on the surface of different surface finishes. I have managed to minimise this by using recessed platens but I'm sure there are better ways- particularly on thinner wafers.

Daniel

-----Original Message-----
From: l j [mailto:tele992001@yahoo.com]
Sent: 08 June 2010 00:13
To: mems-talk@memsnet.org
Subject: [mems-talk] CF4 : O2 RIE of silicon, variability

Hello all,
 
I see great variablity in etch rate of silicon with RIE CF4:O2 etch.
 
At one point I see etch rate of >1um/min, at other <0.1um/min. This is at same proces parameter setting (1:12 O2:CF4 ratio, 0.2T, 500W).
 
Can anyone comment on what might casue such wide variability in etch rate at nominally constant process parameters?
 
Thanks in advance,
K.C.



---------- Forwarded message ----------
From: javad sharifi <m0j0sharifi@gmail.com>
To: General MEMS discussion <mems-talk@memsnet.org>
Date: Wed, 9 Jun 2010 01:42:25 +0430
Subject: Re: [mems-talk] DRIE Simulator
hi all, i need a simulator for mems.....can you introduce me ?


On 6/8/10, antwi nimo <nimoantwi1980@yahoo.com> wrote:
> Suprem.
>
> Suprem will not give you DRIE per say but etching in general. I dont know if
> there is a specific simulation tool to deal with DRIE exclusive to etching
> in general.
>
> My experience is that SUPREM works just fine for simulating etching mems
> materials.
>
> regards,
> Nimo



---------- Forwarded message ----------
From: Jie Zou <zoujiepku@gmail.com>
To: General MEMS discussion <mems-talk@memsnet.org>
Date: Tue, 8 Jun 2010 21:08:38 -0400
Subject: Re: [mems-talk] CF4 : O2 RIE of silicon, variability
You may also want to check whether your surface has a thin layer of
native oxide.

Jie

On Mon, Jun 7, 2010 at 7:12 PM, l j <tele992001@yahoo.com> wrote:
> Hello all,
>
> I see great variablity in etch rate of silicon with RIE CF4:O2 etch.
>
> At one point I see etch rate of >1um/min, at other <0.1um/min. This is at same proces parameter setting (1:12 O2:CF4 ratio, 0.2T, 500W).
>
> Can anyone comment on what might casue such wide variability in etch rate at nominally constant process parameters?
>
> Thanks in advance,
> K.C.
>

*  Zou Jie (Jay)
*  Department of Physics
*  University of Florida
*  Tel: +1-352-846-8018
*  Email: zoujiepku@gmail.com
*  Homepage: http://plaza.ufl.edu/zoujie/


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B Reversible Photo-regulation of a Hammerhead Ribozyme Using a Diffusible Effector | Scribd

http://www.scribd.com/mobile/documents/32762178

B Light-Regulated Catalysis by an RNA-Cleaving Deoxyribozyme | Scribd

http://www.scribd.com/mobile/documents/32762148

Tuesday, June 8, 2010

B Access : Spatiotemporal control of cell signalling using a light-switchable protein interaction : Nature

http://www.nature.com/nature/journal/v461/n7266/full/nature08446.html

B Enzymatic assembly of DNA molecules up to several ... [Nat Methods. 2009] - PubMed result

http://www.ncbi.nlm.nih.gov/pubmed/19363495?dopt=Citation

B Fwd: MEMS Express from MNX

---------- Forwarded message ----------
From: "MEMS News" <mems-news-owner@mems-exchange.org>
Date: Jun 8, 2010 3:52 PM
Subject: MEMS Express from MNX
To: <mems-news@mems-exchange.org>

MEMS technology
thumbnailMicro Energy Harvesters - An Alternative Source of Renewable Energy
Batteries are typically the dominant component in terms of size at the micro scale. Energy harvesting shows promise as an alternative for powering these ...
yesterday AZoNano.com - MEMS technology
thumbnailHealthcare is focus of Holst Centre research efforts
Mercedes Crego-Calama described a MEMS-based electronic nose, in which a MEMS bridge acquires extra mass in the presence of volatile chemical vapors, ...
today EDN.com - MEMS technology
MEMS business
Tegal Receives Repeat Order for Tegal 4200 SE Cluster Tool Silicon DRIE ...
"Our customer is known for their technological leadership in the MEMS and Power IC markets, and we see this repeat order as confirmation of the Tegal ...
today MarketWatch (press release) - MEMS business
thumbnailMultitest Introduces MEMS Solution for Pressure Sensors
PRLog (Press Release) – Jun 07, 2010 – Rosenheim, Germany: Mulitest's concept for MEMS test and calibration equipment continues for pressure sensors. ...
yesterday PRLog.Org (press release) - MEMS business
NextGenLog: World's 1st #MEMS #Gyroscope Packed into Smarter ...
Apple Inc.'s iPhone 4, unveiled by the company today, is the world's first smart phone to sport a MEMS gyroscope, confirming earlier speculation. Look for every smartphone vendor to add a gyroscope their offerings by Christmas 2010. ...
R. Colin Johnson today - MEMS business
iPhone 4 Sensors Highlight a Bright Spot for VCs | magw.at
It's a great time to be a manufacturer of microelectromechanical systems (MEMS), as smartphones are increasingly filled with them — the fourth-generation iPhone being just the latest example. The handset, which was unveiled yesterday, ...
Stacey Higginbotham today - MEMS business
Nanotechnology
Boston College Scientists Use Nanoscale Architecture to Make Efficient Solar ...
The BC team based their nanoscale solar architecture on the coaxial cable, and developed a thin film solar cell with greater efficiency than any other thin ...
today Nanotechnology and Development News - Nanotechnology
thumbnailProbing the Possibility of Power Over Force
If tests prove that the force can be controlled, the outcome could alter the future of nanoelectromechanical systems (NEMS), drastically improving how they ...
yesterday Signal Magazine - Nanotechnology
Nanotech business
Sequencing the human genome for just thirty dollars
The secret, according to Harvard physicist David Weitz, lies in a technology known as microfluidics. It's pretty much exactly what it sounds like ...
today io9 - Nanotech business

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Event Calendar

Hilton Head Workshop 2010
Hilton Head Workshop 2010
2010-06-06 - 2010-06-10
Hilton Head Island, South Carolina
Thirteenth workshop on the science and technology of solid-state sensors, actuators, and microsystems.
Visit MNX at this event.

sensors expo & conference 2010
sensors expo & conference 2010
2010-06-07 - 2010-06-09
Rosemont, IL
Attend the Leading Forum on Sensing Technologies & Solutions in North America!
Visit MNX at Booth #316.

sensors expo & conference 2010: Thinking Outside the Chip
sensors expo & conference 2010: Thinking Outside the Chip
2010-06-07
Rosemont, IL
MEMS-Based Solutions: Design, Tradeoffs and Applications - Moderator: Roger Grace

ACTUATOR 2010
ACTUATOR 2010
2010-06-14 - 2010-06-16
Bremen, Germany
12 International Conference of New Actuators & 6th International Exhibition on Smart Actuators and Drive Systems

Microtech Conference & Expo 2010
Microtech Conference & Expo 2010
2010-06-21 - 2010-06-25
Anaheim, California, USA
Bringing together the entire Microsystems ecosystem with the goal of accelerating the flow of technologies from development to implementation.
Visit MNX at Booth #857.

MEMS Education Series - MEMS Test and Reliability Short Course
MEMS Education Series - MEMS Test and Reliability Short Course
2010-07-12
SF State University Downtown Campus, San Francisco, CA
MEMS test and reliability assessment methods--with particular attention to operational and financial issues.

SEMICON West
SEMICON West
2010-07-13 - 2010-07-15
San Francisco, California
The flagship annual event for the global microelectronics industry

COMS - The Commercialization of Micro and Nano Systems Conference
COMS - The Commercialization of Micro and Nano Systems Conference
2010-08-29 - 2010-09-02
Albuquerque, New Mexico, USA
The world's premier meeting place that brings together leaders from all over the world and every sector of the industry.
Visit MNX at this event.

IEEE Sensors 2010
IEEE Sensors 2010
2010-11-01 - 2010-11-04
Waikoloa Beach, Hawaii
The 9th Annual IEEE Conference on Sensors

MEMS Executive Congress 2010
MEMS Executive Congress 2010
2010-11-03 - 2010-11-05
InterContinental Montelucia, Scottsdale, AZ, USA
The 6th MEMS Industry Group (MIG) hosted event

IEEE MEMS 2011
IEEE MEMS 2011
2011-01-23 - 2011-01-27
Cancun, Mexico
The 24th International Conference on Micro Electro Mechanical Systems

Transducers' 11
Transducers' 11
2011-06-05 - 2011-06-09
Beijing, China
The 16th International Conference on Solid-State Sensors, Actuators and Microsystems

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Monday, June 7, 2010

B Technology Review: The $30 Genome?

http://www.technologyreview.com/biomedicine/25481/?a=f

B nanoscale coax

http://www.bc.edu/offices/pubaf/news/nanoscale_coax2010_0607.html

B Self-Assembling Nanoscale Fabric Obtained - Harvard researchers are behind the achievement - Softpedia

http://news.softpedia.com/news/Self-Assembling-Nanoscale-Fabric-Obtained-143738.shtml

B Blog on Optical Tweezers: Observation of DNA pinning at laser focal point on Au surface and its application to single DNA nanowire and cross-wire formation

http://opticaltweezers.blogspot.com/2010/06/observation-of-dna-pinning-at-laser.html

B Blog on Optical Tweezers: Assembly of Acircular SnO2 Rod Using Optical Tweezers and Laser Curing of Metal Nanoparticles

http://opticaltweezers.blogspot.com/2010/06/assembly-of-acircular-sno2-rod-using.html

B New nanoscale electrical phenomenon discovered

http://www.ns.umich.edu/htdocs/releases/story.php?id=7709