Navigation Links
An exquisite container
Date:11/1/2009

In campy old movies, Lucretia Borgia swans around emptying powder from her ring into wine glasses carelessly left unattended. The poison ring is usually a confection of gold filigree holding a cabochon or faceted gemstone that can be broken to empty the ring's contents. It is invariably enormous so large it is rather odd nobody seems to notice it.

Lucretia would have given her eyeteeth for the "smart capsule" devised in Younan Xia's laboratory at Washington University in St. Louis. A tiny cage of gold covered with a smart polymer, it responds to light, opening to empty its contents, and resealing when the light is turned off. Infinitely more cunning and discreet than Lucretia's ring, the nanocage is too small to be seen except indirectly: billions change the color of liquid in a test tube.

No Lucretia, Xia is a healer rather than a poisoner. The smart nanocage is designed to be filled with a medicinal substance, such as a chemotherapy drug or bactericide. Releasing carefully titrated amounts of a drug only near the tissue that is the drug's intended target, this delivery system will maximize the drug's beneficial effects while minimizing its side effects.

The method for making the capsules and tests of their performance appeared online on Nov. 1, 2009, as part of the advance online publications program of the journal Nature Materials.

The first step in making a smart capsule is to mix up a batch of silver nanocubes. Tiny single-crystal cubes of silver can be made by adding silver nitrate (AgNO3) to a solution that donates electrons to the silver ions, allowing them to precipitate as solid silver. The addition of another chemical encourages the silver atoms to deposit on some parts of a seed crystal rather than others, coaxing the seeds to form sharp-edged cubes rather than misshapen lumps.

A second step clips all eight corners off the cubes.

The clipped silver cubes then serve as "
'/>"/>

Contact: Diana Lutz
dlutz@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology technology :

1. Bedford Laboratories(TM) to Begin Shipping Fluconazole Injection in PVC Flexible Containers
2. Thermo Fisher Scientific to Expand Manufacturing Operation for Single-Use Bioprocessing Containers
3. International Isotopes Inc. Announces Completion of an Exclusive Distributor Agreement for Sales of New Style Transportation Containers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
An exquisite container
(Date:5/28/2015)... 2015 Research and ... of Jain PharmaBiotech,s new report  "Alzheimer Disease ... their offering.       (Logo: http://photos.prnewswire.com/prnh/20130307/600769) ... in management. With nearly 8 million sufferers ... markets of the world and anticipated increases ...
(Date:5/28/2015)... DUBLIN , May 27, 2015 Research ... the "Animal Genetics Market by Products, by Testing ... their offering. The global animal genetics market ... 2014 and grow at a CAGR of 8-9% during ... This market is mainly driven by increasing animal protein ...
(Date:5/28/2015)... May 28, 2015 Natera, Inc., a ... study published in Ultrasound in Obstetrics & ... (SNP)-based non-invasive prenatal test (NIPT) can identify a ... A study based upon data collected ... occur in about 1 in 1,000 pregnancies, although ...
(Date:5/28/2015)... 28, 2015 Biscayne Pharmaceuticals, Inc ., ... its growth hormone-releasing hormone (GHRH) technology will be discussed in ... Annual Meeting. The data show that the family of ... blockers, is present on many primary breast cancer cells ... GHRH antagonists could have broad anti-cancer potential in breast ...
Breaking Biology Technology:Global Alzheimer Disease Report 2015-2024 - New Drugs, Markets and Companies 2Global Alzheimer Disease Report 2015-2024 - New Drugs, Markets and Companies 3Global Animal Genetics (Canine, Equine, Poultry, Porcine, Bovine, and Genetic Material) Market 2015 - Global Forecast to 2020 2First Confirmed Detection of a Complete Molar Pregnancy with Cell-Free DNA Test 2First Confirmed Detection of a Complete Molar Pregnancy with Cell-Free DNA Test 3Data Presented At 2015 ASCO Annual Meeting Shows Biscayne Pharmaceuticals' GHRH Antagonist Target Is Expressed Across All Breast Cancer Subtypes 2Data Presented At 2015 ASCO Annual Meeting Shows Biscayne Pharmaceuticals' GHRH Antagonist Target Is Expressed Across All Breast Cancer Subtypes 3
... Inc. (NYSE Amex: PTN ) today announced the ... of 23,000,000 shares of its common stock, Series A Warrants ... B Warrants to purchase 21,000,000 shares of its common stock, ... Palatin expects that the net proceeds of the offering will ...
... Colo.Physicists at the National,Institute of Standards and Technology,(NIST) ... separate locations to take turns,jiggling back and forth ... linking the motions of two physically,separated atoms, the ... quantum computers and simulations. Described in a ...
... 2011 Scarguard Labs, LLC, a closely held company ... dermatological problems through the use of multi-technology drugs enhanced ... they have received approval from Health Canada to sell ... "We are very pleased to gain approval for retail ...
Cached Biology Technology:Palatin Technologies, Inc. Announces Pricing of Public Offering of Common Stock and Warrants 2Palatin Technologies, Inc. Announces Pricing of Public Offering of Common Stock and Warrants 3Quantum hot potato: NIST researchers entice 2 atoms to swap smallest energy units 2Quantum hot potato: NIST researchers entice 2 atoms to swap smallest energy units 3
(Date:5/11/2015)... , May 11, 2015  Synaptics Incorporated (NASDAQ: ... interface solutions, today announced the appointment of ... Chief Financial Officer, reporting to Rick Bergman ... current Chief Financial Officer, Kathleen Bayless , ... Mr. Ali brings extensive financial management ...
(Date:5/8/2015)... JOSE, Calif. , May 8, 2015 Synaptics ... interface solutions, today announced that members of the executive management ... J.P. Morgan 43rd Annual Technology, Media and Telecom Conference ... Waterfront Hotel in Boston, MA ... May 27, 2015 Time: 2:45pm ET Location: The New York ...
(Date:4/27/2015)... ATLANTA , April 27, 2015  For more ... and trade show has been the premier worldwide event ... Systems 2015 is a must-attend event for any local, ... insight into the emerging commercial markets and current applications ... and innovations of this projected $48 billion industry, and ...
Breaking Biology News(10 mins):Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2Synaptics to Present at Upcoming Investor Conferences 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5
... As the federal government builds on its $1 billion investment ... research consortium has developed innovative new maps of both environmental ... remediation of the world,s largest fresh water resource. Writing ... the National Academy of Science ( PNAS ), a ...
... percent more kinds than had been reported in findings published ... on the planet. Hitching rides in the upper troposphere, they,re ... landing in North America.For the first time researchers have been ... to apply molecular methods to samples from two large dust ...
... have published the whole genome sequence of bacteria associated ... and November issues of the Journal of Bacteriology ... Andr Hudson and Michael Savka, professors in RIT,s ... College of Science, isolated and identified three bacteria belonging ...
Cached Biology News:Mapping effort charts restoration tack for Great Lakes 2Mapping effort charts restoration tack for Great Lakes 3Plumes across the Pacific deliver thousands of microbial species to West Coast 2Plumes across the Pacific deliver thousands of microbial species to West Coast 3RIT scientists decode 3 bacterial strains common to grapevines and sugarcane 2RIT scientists decode 3 bacterial strains common to grapevines and sugarcane 3RIT scientists decode 3 bacterial strains common to grapevines and sugarcane 4RIT scientists decode 3 bacterial strains common to grapevines and sugarcane 5
... Rabbit polyclonal to Ki67 - Proliferation Marker, ... cell cycle related nuclear protein, expressed by ... active cell cycle (G1, S, G2 and ... (G0) cells. Ki67 antibodies are useful in ...
Rabbit polyclonal to Shigella (HRP) ( Abpromise for all tested applications)....
HLA II DG+DR+DP Monoclonal Antibody, Purified, Unconjugated, Clone: IQU9 This antibody is specific for the monomorphic determinant of the HLA Class II beta chains of the human MHC (28 kDa)....
100 g monoclonal antibody which can immunocapture ~10 g of Complex IV from heart mitochondria. Also included are 2 mg of bovine heart mitochondria for control immunocapture....
Biology Products: