August 2008 Volume 7 Number 8, pp 597 - 678
Visit Nature Materials online to browse the journal.
Now available at http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0BBL50ES
Please note that you need to be a subscriber to enjoy full text access
to Nature Materials online. To purchase a subscription, please visit:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0aOn0Er
Alternatively, to recommend a subscription to your library, please visit
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0x6t0Ev
=====================================================================
Olympus Microscopy
Advanced Solutions for Metrology and efficient Data Management in
Materials Science. Find out more:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0ByDo0ED
or contact us:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0ByDp0EE
=====================================================================
=====================================================================
Quality, Experience and Innovation in Microscopy
Olympus is one of the leading manufacturers of professional
opto-digital products for science and industry. From microscopes for
training and routine tasks to high-end imaging systems in materials
science, there is a system for every need.
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0BvNb0E6
=====================================================================
=====================================================================
THE SOURCE EVENT - London, 26/09/2008
The Source Event is a dedicated science career fair from Naturejobs.
Meet 1-1 with employers from across Europe looking to fill hundreds of
vacancies. REGISTER NOW for the conference and workshop sessions:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0BwBw0EH
Post your career questions for The Source Event speakers before the
event in the online discussion forum:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0BYIT0EJ
=====================================================================
=====================================================================
Nature Materials: 19.782*
It speaks for itself
As the Impact Factor confirms, we are still the leading primary
research journal in materials sciences and related physical and
biological sciences.
Visit http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0nA0E1
to learn more.
*2007 Journal Citation Report (Thomson Reuters, 2008)
=====================================================================
----------------------
EDITORIAL
----------------------
THE DRAGON AWAKENS p597
Do you think there are too many scientific papers coming out of China?
Think again. As our special focus on China highlights, improvements in
quality over quantity are inevitable.
doi:10.1038/nmat2233
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rc0E2
----------------------
CORRESPONDENCE
----------------------
MAGNETORESISTANCE IN ORGANIC SEMICONDUCTORS p598
John M. Lupton and Christoph Boehme
doi:10.1038/nmat2248
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rd0E3
REPLY TO "MAGNETORESISTANCE IN ORGANIC SEMICONDUCTORS" pp598 - 599
Bin Hu and Yue Wu
doi:10.1038/nmat2249
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Re0E4
----------------------
COMMENTARIES
----------------------
PROLIFIC RESEARCH ON A BARREN ROCK pp600 - 602
As economic competition in the region increases, Hong Kong has to
reinvent itself as a knowledge-based society.
Paul Ching-Wu Chu
doi:10.1038/nmat2229
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rf0E5
MATERIALS RESEARCH IN CHINA pp603 - 605
The fast-paced economic development in China needs to be complemented
by strong support for fundamental research, particularly in the
materials sciences.
Lian Zhou, Hengde Li and Changxu Shi
doi:10.1038/nmat2234
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rg0E6
----------------------
INTERVIEW
----------------------
LEADER OF INNOVATION IN CHINA pp606 - 607
Nature Materials spoke to Lu Yongxiang, President of the Chinese
Academy of Sciences, on the roles that the academy and its more than
100 research-related institutions have in advancing science and
technology in China.
doi:10.1038/nmat2235
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rh0E7
----------------------
RESEARCH HIGHLIGHTS
----------------------
TUBULAR WELLS, LEVITATING ARRAYS AND MORE... p608
doi:10.1038/nmat2236
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Ri0E8
----------------------
NEWS AND VIEWS
----------------------
CELLULAR MATRICES: PHYSIOLOGY IN MICROFLUIDICS pp609 - 610
The in vivo characteristics of the extracellular matrix, such as
biochemical, mechanical and flow properties, are a challenge to mimic
in vitro. Now, a three-dimensional hydrogel structure with integrated
multiple phases shows promise as such a model.
Jeffrey A. Hubbell
doi:10.1038/nmat2238
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rj0EA
BONE FRACTURE: WHEN THE CRACKS BEGIN TO SHOW pp610 - 612
The propagation of submillimetre cracks reveals how the numerous
internal structural dimensions in bone lead to a toughness that varies
with orientation and scale.
Peter Fratzl
doi:10.1038/nmat2240
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rk0EB
NANOCRYSTALS: ALMOST ALWAYS BRIGHT pp612 - 613
Colloidal nanocrystals randomly turn their photoluminescence off and
on under continuous light illumination. Growing thick shells around
the crystals can reduce the blinking effect dramatically, with great
potential advantage for applications.
Alexander L. Efros
doi:10.1038/nmat2239
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rl0EC
CRYSTAL GROWTH: ANATASE SHOWS ITS REACTIVE SIDE pp613 - 615
Fluorine-containing species can cause titania to crystallize with an
unusually large fraction of reactive {001} facets.
Annabella Selloni
doi:10.1038/nmat2241
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rm0ED
MATERIAL WITNESS: RENEWING OLD PROMISES p615
Philip Ball
doi:10.1038/nmat2237
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rn0EE
THERMOELECTRICS: NANOSTRUCTURING AND MORE pp616 - 617
Controlling simultaneously the electric and thermal properties of
materials can lead to very efficient thermoelectric devices. Advances
following different routes were highlighted at a recent conference.
David J. Singh and Ichiro Terasaki
doi:10.1038/nmat2243
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Ro0EF
REGENERATIVE MEDICINE: MATERIALS IN A CELLULAR WORLD pp617 - 618
Biological factors are not the only influence on stem-cell
behaviour - the physics and chemistry of the environment play a part
too. The interaction of materials science and stem-cell science brings
with it a wealth of opportunities for future therapies.
John A. Hunt
doi:10.1038/nmat2242
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rp0EG
=====================================================================
Are you looking for better image processing tools?
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS086m0Ek
Download a free evaluation copy of SPIP today and take advantage of
500+ features within particle, roughness, Fourier and force curve
analysis. Batch process hundreds of images and generate spectacular
3D renderings with just a few mouse clicks.
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0ByEC0EU
=====================================================================
----------------------
LETTERS
----------------------
MAPPING THE SPATIAL DISTRIBUTION OF CHARGE CARRIERS IN LaAlO3/SrTiO3
HETEROSTRUCTURES pp621 - 625
The interfaces between some perovskite oxide insulators show
spectacular electronic properties, originating from the formation of
an electron gas. The spatial extent of the electron gas is still under
debate. Conducting tip atomic force microscopy is now used to show
that, depending on the growth conditions, the high-mobility electron
gas can extend to hundreds of micrometres or to just a few nanometres
from the interface.
M. Basletic et al.
doi:10.1038/nmat2223
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rq0EH
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rr0EI
HIGH-PERFORMANCE DYE-SENSITIZED SOLAR CELLS BASED ON SOLVENT-FREE
ELECTROLYTES PRODUCED FROM EUTECTIC MELTS pp626 - 630
The presence of organic solvents in solar cells has hindered the
application of devices, especially in flexible cells. Now, by mixing
three solid salts, a solvent-free liquid electrolyte for dye-sensitized
solar cells has been discovered that shows both excellent efficiency
and stability.
Yu Bai et al.
doi:10.1038/nmat2224
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rs0EJ
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rt0EK
ORDERED SILICON VACANCIES IN THE FRAMEWORK STRUCTURE OF THE ZEOLITE
CATALYST SSZ-74 pp631 - 635
Elucidation of the framework structure of zeolites can sometimes prove
difficult. The combination of powder diffraction and electron
microscopy using a charge-flipping algorithm enables ordered silicon
vacancies in a zeolite catalyst to be revealed.
Christian Baerlocher et al.
doi:10.1038/nmat2228
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Ru0EL
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rv0EM
IN SITU COLLAGEN ASSEMBLY FOR INTEGRATING MICROFABRICATED
THREE-DIMENSIONAL CELL-SEEDED MATRICES pp636 - 640
The contractile forces of cells can cause extracellular matrices to
detach from their surroundings, which is problematic for biological
studies and tissue engineering. Now, multiple phases of cell-seeded
hydrogels can be integrated using a collagen-fibre-mediated method,
resulting in the construction of well-defined and stable patterns of
three-dimensional matrices.
Brian M. Gillette et al.
doi:10.1038/nmat2203
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rw0EN
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rx0EO
----------------------
ARTICLES
----------------------
THE ROLE OF METAL NANOPARTICLES AND NANONETWORKS IN ALLOY DEGRADATION
pp641 - 646
Typically, metal alloys are protected from corrosion through the
formation of an oxide layer. Nevertheless, alloy degradation does
occur. It is now shown that metallic nanoparticles in the oxide layer
are instrumental to this process. On the basis of this understanding,
improvements in alloy degradation by careful choice of composition are
demonstrated.
Z. Zeng, K. Natesan, Z. Cai and S. B. Darling
doi:10.1038/nmat2227
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Ry0EP
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1Rz0EQ
CONTROL OF FLUIDITY AND MISCIBILITY OF A BINARY LIQUID MIXTURE BY THE
LIQUID-LIQUID TRANSITION pp647 - 652
Recent work has provided evidence for the existence of a liquid-liquid
transition (LLT) in some single-component fluids. It is now shown that
the LLT can be used to control the fluidity and miscibility of
triphenyl phosphite with another molecular liquid, demonstrating the
possibility of the first definite application for exploiting this
phenomenon.
Rei Kurita, Ken-ichiro Murata and Hajime Tanaka
doi:10.1038/nmat2225
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R10ED
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R20EE
RESONANT BONDING IN CRYSTALLINE PHASE-CHANGE MATERIALS pp653 - 658
Although phase-change materials are of significant importance for
optical and electronic information storage applications, the search for
new materials so far has been based on empirical methods. Now, the
discovery that their crystalline phase shows resonant bonding opens the
way to a deterministic search for new phase-change materials.
Kostiantyn Shportko et al.
doi:10.1038/nmat2226
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R30EF
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R40EG
TOWARDS NON-BLINKING COLLOIDAL QUANTUM DOTS pp659 - 664
One of the obstacles in using nanocrystals as fluorophores is that they
tend to blink. This was thought to be a very general feature. Now,
very-high-quality core-shell CdSe-CdS nanocrystals showing highly
reduced blinking have been grown. The reduced blinking seems to be
related to the thickness of the CdS shell and the high quality of the
core-shell interfaces.
Benoit Mahler et al.
doi:10.1038/nmat2222
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R50EH
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R60EI
LITHIUM DEINTERCALATION IN LiFePO4 NANOPARTICLES VIA A DOMINO-CASCADE
MODEL pp665 - 671
Although lithium iron phosphate is a promising electrode material for
lithium-ion batteries, its intercalation mechanism remains unclear.
Characterization by X-ray diffraction and electron microscopy
demonstrates that the lithium deintercalation process occurs as a wave
moving through the crystal, and can be described by a domino-cascade
model
C. Delmas et al.
doi:10.1038/nmat2230
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R70EJ
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1R80EK
THE TRUE TOUGHNESS OF HUMAN CORTICAL BONE MEASURED WITH REALISTICALLY
SHORT CRACKS pp672 - 677
The toughness of human bone is difficult to measure, as it is more
difficult to break than to split. It is now shown that in the
transverse orientation, relevant for breaking, bone is much tougher
than previously thought owing to a surprising increase in toughness
during the growth of small cracks.
K. J. Koester, J. W. Ager, III and R. O. Ritchie
doi:10.1038/nmat2221
Abstract: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1SA0EU
Article: http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1SB0EV
----------------------
CORRIGENDUM
----------------------
ELECTRIC-FIELD CONTROL OF LOCAL FERROMAGNETISM USING A MAGNETOELECTRIC
MULTIFERROIC p678
Ying-Hao Chu et al.
doi:10.1038/nmat2246
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0B1SC0EW
=====================================================================
Sixth chemistry podcast now live
Focusing on nanotechnology, in this May/June 2008 show, we discover how
a team from MIT are getting nanoparticles into cells, do a spot of
interstellar chemistry with an escaping sugar molecule, issue a health
warning for those working with carbon nanotubes, and take a look at
the latest online tool helping chemists get hold of chemical
information.
Free to download, listen to it today at:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0BYHG0E4
=====================================================================
You have been sent this Table of Contents Alert because you have opted
in to receive it. You can change or discontinue your e-mail alerts at
any time,by modifying your preferences on your nature.com account at:
http://ealerts.nature.com/cgi-bin24/DM/y/emU50Xztnp0HjS0Zzu0Ea
(You will need to log in to be recognised as a nature.com registrant).
For further technical assistance, please contact our registration
department:
registration@nature.com
For print subscription enquiries, please contact our subscription
department:
subscriptions@nature.com
For other enquiries, please contact our customer feedback department:
feedback@nature.com
Nature Publishing Group | 75 Varick Street, 9th Floor | New York |
NY 10013-1917 | USA
Nature Publishing Group's worldwide offices:
London - Paris - Munich - New Delhi - Tokyo - Melbourne -
San Diego - San Francisco - Washington - New York - Boston
(c) Copyright 2008 Nature Publishing Group
=====================================================================
