More Than Half of H-1B Visas Go to India Nationals
Computerworld (01/15/08) Thibodeau, Patrick
Indian nationals received 54 percent of the total number of temporary
visas approved in 2006, and an increasing number of foreign workers who
hold these visas, more than half, work in computer-related fields,
concludes the National Science Board report, "Science and Engineering
Indicators 2008." The report examines the state of science and engineering
training and the ability of the U.S. to compete globally, and analyzes H-1B
visa trends. The report found that although the United States spent about
$340 billion in research and development in 2006, a record high, federal
support for basic and applied research continued its multi-year decline.
The report also cautioned that U.S. grade school students continue to fall
behind other developed countries in science and math. The report's
conclusions match those made by other observers. ACM, in its policy blog
(see
http://usacm.acm.org/usacm/weblog/index.php?p=558) recently examined
federal spending earmarked for research this year and concluded that
Congress is approving increases that do not match the inflation rate, as
well as including earmarks for construction projects that do not fit its
basic research funding mission. In the policy blog, ACM argues that
Congress has "abandoned its commitment to lead in science and technology."
The NSB report warns that the U.S. science and engineering workforce may
decline rapidly over the next decade due to retiring baby boomers. "If
this slowdown occurs, the rapid growth in R&D employment and spending that
the United States has experienced since World War II may not be
sustainable," the report says.
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Global Advances Challenge U.S. Dominance in
Science
New York Times (01/16/08) P. A15; Dean, Cornelia
The United States is still the world leader in scientific and
technological innovation, but economic development in foreign countries,
particularly in Asia, is threatening America's dominance, according to a
new report from the National Science Board. The report says the United
States' position is especially delicate because of the country's reliance
on foreign-born workers to fill technical jobs. The report recommends
increasing financing for basic research and greater "intellectual
interchange" between academic and industry researchers. The NSB also
called for greater efforts to track the globalization of high-tech
manufacturing and services and their impact on the American economy. The
report says surveys of science and mathematics education are "disappointing
and encouraging," with fourth- and eighth-grade students in all ethnic
groups improving in math, but progress in science is far less encouraging.
Many Americans remain ignorant on basic scientific principles in biology
and physics, specifically the Big Bang theory and evolution, and many are
unable to answer correctly when asked if the Earth moves around the Sun.
"These differences probably indicate that many Americans hold religious
beliefs that cause them to be skeptical of established scientific ideas,"
the report says, "even when they have some basic familiarity with those
ideas."
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Could Post-Ballot Audits Renew Faith in U.S.
Elections?
Computerworld (01/16/08) Weiss, Todd R.
Observers wonder whether ballots can be efficiently tallied while
restoring Americans' confidence in the electoral process even as distrust
of electronic voting mounts. A ray of hope may be offered in random,
mandatory audits of cast ballots, and support for the concept may be
growing. New Jersey Gov. Jon Corzine (D) just passed a law mandating
random audits starting later this year, and this statute will dovetail with
the state's voter verifiable paper records law requiring electronic
touch-screen voting machines to use a paper printout so voters can be
certain that their votes were recorded correctly. Coordinator of the
Electronic Privacy Information Center's National Committee for Voting
Integrity Lillie Coney says her group advocates mandatory random audits,
provided they are truly random. "No one should be able to know where the
audits are going to be held [on specific machines]," she argues, adding
that the proper performance of a random audit involves pulling the machines
from the warehouse, auditing them, and then submitting a report without any
early notification on what machines will be audited. Officials can then
study the paper ballots and the tallies on the optical scanning machines to
determine whether the audit lines up within an extremely thin degree of
error to guarantee that the election was completed accurately. Such a
strategy eliminates the likelihood that the results of an election can be
changed by large enough error, according to Iowa e-voting activist Jerry
Depew. "Every state should be required to do post-election audits to be
sure the machines are counting properly, and then if there are
discrepancies, they can be going to a hand count" for an accurate vote
tally, says VotersUnite.org executive director John Gideon.
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High-Tech Hiring: Youth Matters
BusinessWeek (01/15/08) Wadhwa, Vivek
The engineering globalization debate generally focuses on visas, with one
side arguing that there is a shortage of engineers and a need for foreign
workers while the other says the push for more visas is a way of lowering
salaries. However, some believe that instead of focusing on visas, the
globalization debate should examine the issue of age. Tech companies
prefer to hire young engineers, and engineering can be called an "up or
out" profession where workers either move up the ladder of find themselves
out of work. University of California professor Norm Matloff, one of the
most outspoken opponents of foreign-worker visas, says that careers in
programming are notoriously short-lived, and that his research into
attrition rates shows that five years after finishing college only 57
percent of computer science graduates work as programmers, at 15 years the
number drops to 43 percent, and after 20 years, when most graduates are
around age 42, the figure drops to 19 percent. Matloff says age
discrimination is widespread in the tech industry and the use of foreign
workers in the United States facilitates such practices. Neopatents CEO
JiNan Glasgow says she can afford to pay what is needed, but that her best
hires and most productive employees are recent college graduates. Glasgow
says they are generally more familiar with the latest technology, adapt
readily to change, are more creative, and try new things. Middle-aged
hires have not always worked out for Glasgow, who says most have dated
skills and expect to be paid for experience that was not relevant to her
firm. Part of the problem is that companies are increasingly locating
their research and development operations closer to growth markets,
particularly in Asia, adding tens of thousands of jobs in foreign markets
that would otherwise go to more expensive American workers. Wadhwa says
the key for aging engineers is to stay educated on new technologies.
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Semantic Web Takes a Big Step Forward
InfoWorld (01/15/08) Krill, Paul
The World Wide Web Consortium's Tuesday announcement of the publication of
SPARQL query technology will be an important step forward for the Semantic
Web. W3C says SPARQL allows people to concentrate on the knowledge they
want rather than on the database technology or data format used to store
information. SPARQL is designed to be used at Web-scale to permit queries
over distributed data sources independent of format. "[SPARQL is] the
query language and protocol for the Semantic Web," says Lee Feigenbaum,
chair of W3C's Resource Description Framework Data Access Working Group.
The SPARQL spec interoperates with other W3C Semantic Web technologies,
including RDF, RDF Schema, Web Ontology Language, and Gleaning Resource
Descriptions from Dialects of Languages, which is used to automatically
extract Semantic Web data from documents. The consortium says the Semantic
Web is supposed to facilitate the global sharing, merging, and reusing of
data. "The basic idea of the Semantic Web is take the idea of the Web,
which is effectively a linked set of documents around the world, and apply
it to data," says Feigenbaum. The primary function of the Semantic Web is
to comprise a massive set of databases that can be combined, says W3C
representative Ian Jacobs.
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Who Invented the Firewall?
Dark Reading (01/15/08) Higgins, Kelly Jackson
Numerous computer experts can lay claim to inventing the firewall. Nir
Zuk says he developed the technology that is used in all firewalls, and
David Pensak claims to have built the first commercially successful
firewall. William Cheswick and Steven Bellovin wrote a book on firewalls
in 1994 at AT&T Bell labs and built a circuit-level gateway and developed
packet-filtering technology, though they do not claim to have invented the
firewall. Marcus Ranum says his reputation as inventor of the firewall is
just a marketing trick and that David Presotto deserves the credit.
Regardless, all of these security experts, along with Jeff Mogul, Paul
Vixie, Brain Reid, Fred Avolio, Brent Chapman, and others were associated
with the development of firewall technology. Gartner's John Pescatore says
Cheswick and Bellovin were the fathers of the network firewall concepts,
using packet filtering to deny everything except what is explicitly
allowed, while Ranum was the father of DEC SEAL, the first firewall
product. Today, some of the firewall's creators are no longer big
supporters of the technology. Cheswick, a lead member of the technical
staff at AT&T Research, says he has not personally used a firewall since
the 1990s. "They are an economic solution to weak host security. I want
to see stronger host security," says Cheswick, who adds that firewalls
still have a place but are simply another network element. Steven Bellovin
agrees. "The firewall as Bill and I described it in 1994 in our book is
obsolete," says Bellovin, now a professor of computer science at Columbia
University. He says having a guard at the front door when there are
thousands of backdoors into a network does not work. "I'm not saying get
rid of it at the door. It provides a low-grade access control for low-value
resources," Bellovin says. "But the real access control [should be] at the
host."
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Google's Answer to Wikipedia
Technology Review (01/15/08) Schrock, Andrew
Google recently announced Knol, an experimental Web site that allows
individual authors to create subject pages on topics of interest or
expertise. Knol is seen as a response to Wikipedia, but will differ from
Wikipedia in that pages will not be open for anyone to contribute to. Knol
articles will have individual authors that will list their credentials,
including work history, institutional affiliation, along with references to
build credibility. Individual topics may have multiple pages by different
authors, allowing Web users to read multiple but possible conflicting
viewpoints on a subject. Currently, participation in Knol is by invitation
only, but Google may eventually make Knol open to the public. "A Knol on a
particular topic is meant to be the first thing someone who searches for
this topic will want to read," says Google's Udi Manber. Wikipedia's Mark
Pellegrini sees several problems with Knol. "I think what will happen is
that you'll end up with five or 10 articles," Pellegrini says, "none of
which is as comprehensive as if the people who wrote them had worked
together on a single article." Pellegrini says Knol authors will tend to
link to other articles they have written, but ignore other people's work on
the subject, and that Knol articles could end up being less complete than
if they were written by a community of authors. However, Google has a
major advantage in that it may pay Knol authors if the pages attract a
large number of visitors and advertisers are willing to publish ads on Knol
pages.
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Monkey's Thoughts Propel Robot, a Step That May Help
Humans
New York Times (01/15/08) P. D3; Blakeslee, Sandra
A Duke University team led by Dr. Miguel A.L. Nicolelis has made it
possible for a monkey in North Carolina to drive a robot in Kyoto, Japan,
by thought. The monkey walks a treadmill while watching the robot on a
video screen, and her brain signals are picked up by an electrode implant,
processed by a computer, and transmitted to the robot via a high-speed
Internet connection. The computer that processes the neural signals also
uses a model of the monkey's leg movements captured on video to refine the
accuracy of the transmitted walking pattern. Using a reward system in
which the monkey got a treat when the robot's leg movements matched her
own, the researchers were able to train her to keep propelling the machine
even when the treadmill--and her own leg movement--was stopped. Later
experiments will add tactile sensation through neuronal microstimulation so
that the animal can feel the robot's feet touching the ground. Nicolelis
believes this research could one day lead to a brain-machine interface that
might enable paralytics to gain mobility by thought. Most experimentation
will use only animals as test subjects, at least until a safe way to
implant electrodes in human brains is found.
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Voters Respond Favorably to Touch Screen Voting
Equipment
University of Michigan News Service (01/14/08) Wadley, Jared
New research by the University of Michigan, the University of Maryland,
and the University of Rochester indicates that voters have more confidence
that paperless, touch-screen systems will record their vote accurately, and
that voters focus more on what affects their voting experience than on
potential fraud, the opposite of what is valued by many computer
scientists, voting activists, and a growing number of election
administration officials. "Casting a ballot may seem simple, but the
interactions between voters and voting system interfaces are complex," says
University of Michigan professor Michael Traugott. "The more effort
involved in voting, the less satisfied voters are with the experience."
The study of voting technology examined six voting systems, including paper
ballot/optical scan, manual advance touch screen, auto advance touch screen
with paper, dial and buttons machine, a full-face membrane with buttons,
and a zoomable touch screen prototype not available to the public. The
study included responses from 1,540 voters who cast ballots on each
machine. Paper ballots and standard touch screens are more accurate when
people are casting multiple votes for the same race, however, paper ballots
do not work well when the voter needs to change a vote or write in a
candidate. "We observed that voters can get quite lost in the voting
process and when they do, the chances are greater they will not recover,
ultimately voting for no one or a candidate other than they intended," says
University of Michigan professor Frederick Conrad.
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Brain-Controlled Computer Switches on in a
Heartbeat
New Scientist (01/10/08) Simonite, Tom
Researchers at Graz University of Technology, Austria, say physically
disabled people need to be able to turn on brain-computer interfaces (BCI)
without assistance if the devices are to truly be useful and give them
greater freedom. Graz University researcher Reinhold Scherer has started
testing ideas that would allow a BCI user to turn on the device unassisted.
"We want these interfaces to improve quality of life and give
independence," Scherer says. "But every time you want to use them you rely
on others." Slawomir Nasuto, who works on BCIs at Reading University,
admits that little thought has been given to this problem, but BCIs cannot
be left on indefinitely. "Without switching a BCI on and off, its
operation may yield quite undesired effects," Nasuto says. "Unintended
operation of a device can be tiring and de-motivational for the end user."
Using brain signals to wake a BCI from a standby mode is not practical
because identifying the correct signal from a stream of normal brain
activity is too difficult, but Scherer believes another biological signal
could be the answer. In recent experiments, Scherer and his colleagues
tested if voluntary spikes in heart rates could turn on a BCI. Test
subjects created spikes by breathing rapidly for a short period, while
software compared the heart rate to one recorded at rest. The 10
volunteers were able to turn on the BCI, control a prosthetic hand, and
turn the device off again four times. However, during 30 minutes of
testing there were 2.9 false positive "on" signals.
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Tool Allows Emergency Personnel to Track Resources
Georgia Institute of Technology (01/16/08) Vogel, Abby
The Geographic Tool for Visualization and Collaboration (GTVC), a
collaborative mapping tool developed by the Georgia Tech Research Institute
(GTRI) at the Georgia Institute of Technology, is helping emergency
management officials better coordinate event and incident planning and
response. GTRI has developed a resource database designed to identify,
activate, track, and coordinate emergency response resources. "A lot of
mapping systems are pretty complex to operate. Our system was deliberately
designed to be easy to use for people who are not mapping experts," says
Kirk Pennywitt, a senior research engineer in GTRI's Information Technology
and Telecommunications Laboratory. GTVC was originally intended for
military applications when development began in 2000, but it has since been
redesigned for emergency management and first responders. GTVC can track
chemical or smoke plumes, help plan evacuation routes during emergencies
such as hurricanes, fires, or flooding, and track resources including the
locations of hospitals, fire stations, schools, nursing homes, sand bags,
dump trucks, water, personnel, and other supplies. The map can also track
the status of those assets, such as the number of beds available in a
hospital. GTVC can track resources in real time and can alert emergency
personnel to new incidents.
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Software That Grades Handwritten Essays May Boost
Comprehension, Too
University at Buffalo News (01/14/08) Goldbaum, Ellen
University at Buffalo computer scientists and researchers are developing a
computational tool that could significantly reduce the time it takes to
grade handwritten essays, as well as improve students' reading
comprehension skills. The software under development is being designed to
work with the standardized English Language Arts exams administered every
year by the public school systems in every state, and could eventually
relieve teachers of the task of grading the children's essays. Preliminary
results with the software will be published in the February/March issue of
Artificial Intelligence. Using handwritten essays from eighth graders in
Buffalo's public schools, the software was able to grade the essays within
one point of the score teachers gave the essays on a six point scale 70
percent of the time. Sargur N. Srihari, director of UB's Center of
Excellence in Document Analysis and Recognition, says the software involves
two significant artificial intelligence problems, handwriting recognition
and an artificial neural network for automated grading. "In this method,
the system 'learns' from a set of answers that were scored already by
humans, associating different values or scores with different features in
the essays," Srihari says. Although some teachers may doubt a computer's
ability to accurately grade essays, James L. Collins, UB education
professor and co-investigator, says, "Computational linguistics has made
great leaps over the past decade and it turns out that for judging the
overall quality of a paper, computers are indeed as reliable as human
graders."
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Torvalds Breaks Down Linux
Network World (01/10/08) Fontana, John
Linux creator Linus Torvalds says Linux development is more like a social
network built on trusted relationships than a democratic community
dedicated to a single development process. "I have a policy that he who
does the code gets to decide," Torvalds says. He has written approximately
2 percent of the Linux code since creating the operating system in 1990.
Torvalds says the "Linux community" does not refer to a big, happy open
source family, but rather that the development process is managed by
numerous groups with different ideals and goals. "But at the end of the
day, the only thing that matters is actual code and the technology itself,"
says Torvalds, adding that anyone unwilling to step up does not have a say
in the project. Torvalds also does not see Linux as a part of a greater
cause. "To other people it is," Torvalds says. "I mean, it's actually one
of the things I found to be interesting is how people use Linux in ways
that I didn't start out designing it for and sometimes use it for things
that I really don't care about personally that much." Torvalds says that
companies and individuals need to build trust to be valued in the open
source process. "What happens is people know," Torvalds says. "They've
seen other people do work over the last months or years, in some cases
decades, and they know that, 'OK, I can trust this person. When he sends me
a patch, it's probably the right thing to do even if I don't understand
quite why' and you kind of build up this network."
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Graphite Pencilled in to Replace Silicon
Transistors
New Scientist (01/14/08)No. 2638, P. 24; Palmer, Jason
Yakov Kopelevich and Pablo Esquinazi of the State University of Campinas
in Brazil believe graphite is a logical candidate to replace silicon
transistors in computers, considering researchers have been optimistic
about the potential of graphene. However, concerns about graphene, the
hexagonal arrays of carbon atoms in sheets one atom thick, remain because
the sheets tend to curl up and react with surrounding substances. Graphite
has adjacent layers that prevent its multiple stacks of graphene sheets
from curling up, its conductivity can be changed using a magnetic field,
and current can move through it as if it was carried by the massless
"particles" known as Dirac fermions. Such properties are key for quantum
computing. Silicon transistors are shrinking while the number of
transistors placed on computer chips grows, and will become less efficient.
Still, some researchers question whether graphite offers the same
properties as graphene. Millie Dresselhaus, a nano-electronics specialist
at MIT, is unsure if researchers would be able to tune the electronic
properties of graphite for a specific application as easily as graphene.
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Q&A: Ohio Secretary of State Looks Anew at
E-Voting
Computerworld (01/14/08) Friedman, Brad
In the "Evaluation & Validation of Election-Related Equipment, Standards &
Testing" (EVERST) report, Ohio Secretary of State Jennifer Brunner made
several suggestions to Ohio Governor Ted Strickland and state legislators,
including eliminating direct-recording electronic (DRE) touch-screen
machines and switching to a centralized ballot counting system. During a
recent interview Brunner detailed various findings of the report and
described some of the report's results, including potential weaknesses with
optical-scan units. Brunner says that several independent, parallel tests
were conducted, including tests by academic researchers and corporate
scientists, and that the independent tests generated similar and sometimes
identical results. Eventually, Brunner believes that voters should use a
decentralized counting system, but because e-voting security is currently
so weak, a centralized system should be used. Brunner says that a major
problem with optical-scan machines is the ability to turn off the scanner's
memory, which would cause the machine to continue to scan ballots but not
record the votes. "Still, if you were to take the report and assign the
numbers of risk to each component in the system, I think you're going to
see that the greatest number of risks are with the DRE systems," Brunner
says. Brunner says her biggest goal is restoring and ensuring voter
confidence.
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MIT Gas Sensor Is Tiny, Quick
MIT News (01/10/08) Trafton, Anne
MIT professor Akintunde Ibitayo Akinwande is leading the development of
tiny sensors that could be used to detect minute quantities of hazardous
gases much faster than currently available devices. The researchers have
taken the common gas chromatography and mass spectrometry (GC-MS)
techniques and shrunk them to fit in a device the size of a computer mouse.
Eventually, the team plans to build a detector the size of a matchbox.
Akinwande says scaling down gas detectors makes them easier to use in a
real-world environment, reduces the amount of power they require, and
enhances their sensitivity to trace amounts of gases. Current GC-MS
machines take about 15 minutes to produce results, are about the size of a
full paper grocery bag, and use 10,000 joules of energy. The new device
consumes about four joules and can produce results in about four seconds.
Shrinking the device will also allow for precision manufacturing through
microfabrication and batch-fabrication for inexpensive production.
Akinwande and MIT research scientist Luis Velasquez-Garcia plan on
presenting their work at the Micro Electro Mechanical Systems 2008
conference.
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Dan's Cloudy Crystal Ball
HPC Wire (01/11/08) Vol. 17, No. 2, Reed, Daniel
With research and infrastructure funding barely keeping up with inflation,
computational and computer science will continue to limp along, which makes
it all the more critical that advocates keep stressing the importance of
science and computing as enablers of economic expansion, national
innovation, and education, writes Microsoft strategist and science and
technology advisor Daniel Reed. He observes that our operations and
maintenance costs have grown in lockstep with our high-performance
computing systems and software infrastructures, and notes that the National
Science Foundation and its Office of Cyberinfrastructure are attempting to
strike a balance between demands for new investments from the community and
infrastructure sustenance. "Because so much of science now depends on
computing, we must take a more holistic view of investment, examining
scientific and technology priorities across all of the U.S. Federal agency
portfolio and coordinating budgets accordingly," Reed argues, pointing out
that this is one of the core recommendations of a recent President's
Council of Advisors on Science and Technology report on computing. Reed
says he discussed with the OCI advisory committee the possibility of
outsourcing research infrastructure and data management to industrial
partners, acknowledging that privacy, security, quality of service, and
pricing issues must be considered. "All of this is part of the still
ill-formed and evolving notion of cloud computing, where massive
datacenters host storage farms and computing resources, with access via
standard web APIs," Reed writes. "In a very real sense, this is the second
coming of grids, but backed by more robust software and hardware of
enormously larger scale."
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New Threshold for Network Use
Government Computer News (01/07/08) Vol. 27, No. 1, Jackson, Joab
Traditional percolation theory holds that a network is considered
functional as long as one workable path is available, but in a recent paper
in Physical Review Letters researchers offered a new variant of percolation
theory dubbed Limited Path Percolation that takes into account how long it
would take a message to get to its destination. The longer it takes the
less useful the path is, says study co-author Eduardo Lopez, a researcher
at the Energy Department's Los Alamos National Laboratory. "If I'm routing
something and it has to go a longer route, due to localized failures, then
what are the limits of this?" Lopez says. The Limited Path Percolation
variant considers all of the surviving nodes, as well as how much longer it
would take to traverse them. The researchers argue that the network
becomes less valuable the longer it takes, and suggest that the threshold
of users is determined by how tolerant they are of delays. "The
interesting point is not when the percolation threshold is reached, but
rather when the network stops becoming efficient," says study co-author
Roni Parshani, a graduate student at Israel's Bar-Ilan University.
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Self-Powered Nanotech
Scientific American (01/08) Vol. 298, No. 1, P. 82; Wang, Zhong Lin
Extremely small nanosize machines could be driven by systems that harness
waste energy--such as vibrations or the human pulse--from their
surroundings, writes director of the Georgia Institute of Technology's
Center for Nanostructure Characterization Zhong Lin Wang. That energy
could be drawn and transmitted to nanodevices by arrays of piezoelectric
nanowires. Wang and his team have conceived of a nanogenerator comprised
of an array of vertical zinc oxide nanowires boasting both piezoelectric
and semiconducting properties, crowned by an electrode with a ridged
underside that moves laterally in response to external forces. When they
bend back and forth, the nanowires build up a voltage from the compressive
and tensile strains on their sides, and the alternating current is
rectified and emitted as direct current by the semiconductor nanowires and
the conductive electrode. Wang speculates that a biocompatible substrate
would be provided by conductive polymers. The nanogenerator cannot be
practically viable until its performance is dramatically improved so that
the nanowires continuously and concurrently produce electricity that is
effectively collected and distributed. Upcoming research challenges
include growing perfectly uniform nanowire arrays that generate electricity
and extending the arrays' operational life. Wang concludes that nanowire
arrays can function as excellent generators for devices that only have to
operate sporadically.
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