-
January 17, 2011 - Volume 89, Number 3
- p. 32
Science & Technology Concentrates
More Science & Technology Concentrates
- 3-D Nanoscale Chemical Maps Of Teeth
- Tomography analysis reveals compositional differences in microscopic tooth structures
- Interfacial Properties Boost Lasing by Quantum Dots
- Two-monolayer-thin alloy layer in core-shell nanocrystals aids optics applications
- Amoebas Found In Treated Drinking Water Worldwide
- Water Treatment: Free-living amoebas that evade common disinfection treatments can host Legionella and other hazardous microorganisms
- Natural Product Sidesteps Drug Resistance In Yeast
- Enzyme inhibitor could lead to new pharmaceuticals
- Red Blood Cell Mimics Circulate Longer When Flexible
- Cross-linking chemistry imparts bio-like property to hydrogel microparticles
- Arsenate-Phosphate Debate Continues
- Review suggests controversy should stimulate interest in studies of enzyme promiscuity
- Gaseous Carbonic Acid Trapped And Analyzed
- Elusive molecule shown to exist in monomeric and dimeric forms
- One-Pot Method Produces Pyrroles
- Reaction converts aromatic alkynes to heterocycles in presence of palladium catalyst
Topics Covered
More Science Stories
October 24, 2011
Bryostatins Retain Promise
(October 24, 2011 | Vol. 89 Issue 43 | pp. 10-17)New results in total synthesis reinvigorate a 40-year-old field of research.
For Cave's Art, An Uncertain Future
(October 24, 2011 | Vol. 89 Issue 43 | pp. 38-40)Disagreement on conservation course of action complicates a potential reopening.
Cancer Stem Cells
(October 24, 2011 | Vol. 89 Issue 43 | pp. 41-43)Researchers zero in on the pathways that allow cancer to bounce back after treatment.
What's That Stuff? Blue Jeans
(October 24, 2011 | Vol. 89 Issue 43 | p. 44)Making the iconic pants requires both color-addition and color-removal chemistry.
Shedding Nanoparticles
(October 24, 2011 | Vol. 89 Issue 43 | p. 5)Materials Science: Chemists observe metal objects sloughing off ions to form nanoparticles.
Modifying Messenger RNA
(October 24, 2011 | Vol. 89 Issue 43 | p. 7)Chemical Biology: Methylated bases in mRNA may have roles in gene regulation and obesity.
Lab-On-A-Chip For Planets, Moons
(October 24, 2011 | Vol. 89 Issue 43 | p. 8)Microfluidics: Automated chip is designed to detect extraterrestrial amino acids.
New Editor For Analytical Chemistry
(October 24, 2011 | Vol. 89 Issue 43 | p. 9)Publishing: Jonathan Sweedler to take the helm.
Science & Technology Concentrates
(October 24, 2011 | Vol. 89 Issue 43 | p. 37)
October 17, 2011
Improving Shop Safety
(October 17, 2011 | Vol. 89 Issue 42 | pp. 56-57)Yale updates policies on machine shop use after student death.
Cleaning Acrylics
(October 17, 2011 | Vol. 89 Issue 42 | pp. 58-59)Conservation scientists seek new ways to keep modern paintings looking their best.
Detecting H2S In Vivo (Member Content)
(October 17, 2011 | Vol. 89 Issue 42 | p. 60)Studies could lead to sensitive and selective analyses for tiny signaling agent.
Rules For Design
(October 17, 2011 | Vol. 89 Issue 42 | p. 9)Materials Science: Guidelines predict structures formed by nanoparticles and DNA linkers.
Identifying Modified Cells
(October 17, 2011 | Vol. 89 Issue 42 | p. 11)Molecular Biology: Technique tags and enriches cells genetically altered by nucleases.
Linker-Free Molecular Wires
(October 17, 2011 | Vol. 89 Issue 42 | p. 12)Electronics: Metal-carbon bonds increase electrical conductance.
Asymmetry From A Guest
(October 17, 2011 | Vol. 89 Issue 42 | p. 13)Stereochemistry: Enzymelike pocket that hosts chiral species controls catalyst's enantioselectivity.
Science & Technology Concentrates
(October 17, 2011 | Vol. 89 Issue 42 | pp. 54-56)
Quantum dots’ prospects for use in laser applications are looking bright as a result of a study showing how to limit a deleterious effect that robs the semiconductor nanocrystals of their potential lasing power (Nano Lett., DOI: 10.1021/nl103801e). Ten years ago, a research team that included Victor I. Klimov of Los Alamos National Laboratory showed that quantum dots could be made to lase, a demonstration that opened the door to several applications in optics. Despite the proof-of-principle experiment, nanocrystal lasing has remained impractical because of a fast relaxation process known as Auger recombination, which quenches the electronic excitations required for lasing and causes electron, rather than photon, emission. Now, Klimov, Florencio García-Santamaría, Sergio Brovelli, and coworkers report that capping a cadmium selenide core with just a few monolayers of cadmium sulfide suppresses the Auger process by more than two orders of magnitude. The group’s spectroscopic measurements indicate that the improvement stems from the unique electronic properties of a two-monolayer-thin alloy layer at the core-shell interface, a finding consistent with recent theoretical predictions, they say.
- Chemical & Engineering News
- ISSN 0009-2347
- Copyright © 2011 American Chemical Society
Services & Tools
ACS Resources
ACS Careers
ACS is the leading employment source for recruiting scientific professionals. ACS Careers and C&EN Classifieds provide employers direct access to scientific talent both in print and online. Jobseekers | Employers
» Join ACS
Join more than 161,000 professionals in the chemical sciences world-wide, as a member of the American Chemical Society.
» Join Now!
Popular Sections
ACS, Analytical SCENE, Business, Careers, Economy, Editor, Education, Employment, Environmental SCENE, Letters, Government, Photo Galleries, Policy, Movies, Multimedia, Nanotechnology, Newscripts, Reel Science, Safety Letters, Science, Stem Cells, Stimulus Funds, Technology, Vaccines, Videos, What's That Stuff
Advertisements
