Posts Tagged ‘Gold Bulletin’
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December 23rd, 2009
Gold Bulletin online now
The latest issue of Gold Bulletin 42(4) has just been published online. This issue is a really special one – to acknowledge the magnificent contribution of Dr David Thompson to the development and promotion of the science of gold catalysis. David, co-author of the book Catalysis by Gold and Technical Editor of Gold Bulletin worked tirelessly in this field for many years. A full appreciation of his life can be found here.Blogging will be a bit lighter over the next week or so, with Christmas and the New year celebrations…
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November 30th, 2009
Memorable research papers
According to the BBC, The Royal Society, one of the world’s oldest scientific institutions, is marking the start of its 350th year by putting 60 of its most memorable research papers online. The archive will include work by Sir Issac Newton, Benjamin Franklin and Stephen Hawking. I haven’t yet been able to establish whether Michael Faraday’s early work on gold colloid will be included, but don’t worry……you can read the late David Thompson’s account of this seminal piece of research here in Gold Bulletin.
As David explain’s, in the paper in Philosophical Transactions entitled ‘Experimental relations of gold (and other metals) to light’, which was based on Faraday’s Bakerian lecture to the Royal Society in London on 5 February 1857, it is clear that Michael Faraday was fascinated by the ruby colour of colloidal gold. This paper is definately worth a read……
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September 29th, 2009
Gold Bulletin – Advance Online Publication?
The Gold Bulletin Editorial Team is considering introducing an advance online publication process for the journal. This would allow papers to appear on the journal’s website before they have a formal issue/page number. Many journals already operate this system including Nature. We would welcome your views on this potential development.
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September 21st, 2009
The use of gold for fabrication of nanowire structures
A few weeks ago I mentioned IBM were growing silicon nanowires using gold nanoparticles. An excellent review of why gold is by far the most widely used seed particle material for growth of semiconductor nanowires has just been published by a team from Lund University (Maria E Messing, Karla Hillerich, Jonas Johansson, Knut Deppert and Kimberly A Dick) in Gold Bulletin.
The review explains that although a couple of other materials have been reported to successfully initiate growth of nanowires, gold is the most universal particle material, capable of seeding a variety of different types of nanowires at a wide range of growth conditions. In the review the group identified and described the production and deposition methods of different types of gold particles used for nanowire growth including:
gold particles made from thin films
aerosol-generated gold particles
gold particles made by lithographic methods
and colloidal gold particles.
They also discussed the different advantages and disadvantages of each particle type if the nanowires are to be used for large scale production of semiconductor devices and perhaps most importantly, the fundamental reason for gold being superior to other materials for initiating growth of nanowires. Their conclusion? The ability of gold to easily form alloys with the growth precursors, its inertness to oxygen and the high diffusivities through gold are all important and added together are what make gold such a suitable material for nanowire seed particles.
Schematic demonstrating particle-assisted nanowire growth. (a) The seed particles are formed/deposited on the substrate and (b) by heating the substrate to a desired temperature and introducing growth materials an alloy is formed. (c) When a supersaturation of the alloy particle with growth material is achieved, nucleation occurs at the particle-substrate interface. (d) Nanowire growth occurs at the particle-wire interface as long as growth material is provided. (e) By switching to growth conditions favoring planar growth radial heterostructures, known as core-shell nanowires, can be grown. (f) Nanowires containing axial heterostructures with very sharp interfaces can be formed by switching between different growth materials. (g) If a second generation of gold particles is deposited onto the as-grown nanowires and (h) the growth process is repeated, branched nanowires for formation of nanowire networks can be grown.Copyright: Gold Bulletin
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September 18th, 2009
Gold Bulletin 42(3). Available now !!!!!
Hi everyone. What a great couple of months we have had in the Gold community. A fantastic Gold 2009, conference in Heidelberg with lots of stimultaing papers and posters and whats even more important lots of science being disscussed over a few beers!
To continue the good few months you can now access the new issue of Gold Bulletin 42(3). Whats in it ? I hear you say. Well we have an editorial by our new Editor. Although he is obviously not new to the Gold Council and Gold Bulletin I am sure he will make a his own mark and style on the future issues of GB.
We have 7 exciting scientific papers covering differing aspects of nanoparticles, nanowires, thin films, metallurgy and nanosphere synthesis. We also have a review of the new Book “Gold Chemistry: Applications and future directions in the life sciences.”. There are two conference reports from the 23rd Santa Fe Symposium on jewelry Manufacturing Technology and also on The Fourth Taylor Conference on new work on gold catalyst. We also have a summary of Gold 2009 in Heidelberg and of couse our every popular section on Highlights from the recent literature.
Go on have a look and let me know what you think !!!!!
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July 8th, 2009
Next issue of Gold Bulletin now available!!
Hi everyoneIt’s here at last, Issue 42(2) of Gold Bulletin.
We have an issue bursting with lots of gold news and science and a superb Guest Editorial from Prof James (Jim) Johnstone from Victoria University of Wellington New Zealand.
We have all the lastest information about Gold 2009 ; the Keynote presentations , the opening Plenary presentations and all the info on the main conference sessions
We have seven wonderful scientific papers from a range of disciplines including Metallurgy, Catalysis, Analytical and also Nanotechnolgy. Also a book review of Mark Grimwade’s Introduction to Precious Metals – Metallurgy for Jewellers and Silversmiths.
Also our regular features of Highlights from Recent Literature and a summary of Calendar Events comming up in the near future.
Hope you enjoy it. Let me know what you think. I always like to hear your views.
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June 5th, 2009
Technology transfer through open access
At World Gold Council, our aim in the development of new industrial uses for gold is to aid the transfer of new gold-based technologies into the market place. A large part of our effort is to help promote new research relating to gold which we do through our open-access journal Gold Bulletin. EVERY paper published in Gold Bulletin can be accessed free through the archives. We believe that is the way for the widest possible dissemination to take place.
I was interested to hear yesterday that University College London in the UK have plans to implement an open access policy ensuring that, subject to copyright permissions, all UCL research is placed online and is freely accessible. The move places UCL at the forefront of academic institutions pioneering the move to open access. To me this looks a positive move in helping UCL’s research reach the widest audience…..
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May 15th, 2009
Top downloads from Gold Bulletin
As many of you will know, the journal Gold Bulletin is an ‘all electronic’ e-journal, with the pdf files free to download from the publication’s website. As a result it is very easy to use the website’s server records to measure the most popular papers published over a given time frame, in terms of files downloaded. The most recently published issue obviously features highly in this list, but I thought it would be interesting to name the most frequently downloaded papers during 2009 (excluding the most recent issue):
The TOP 5 are (number of downloads in brackets):
Gold catalysed oxidation of carbon monoxide G C Bond & D T Thompson, 2000, 33(2), 41-51
Gold as a novel catalyst in the 21st century: Preparation, working mechanisms and applications Masataka Haruta, 2004, 37(1/2), 27-36
Homogeneous catalysis by gold Stephan Hashmi, 2004, 37(1/2), 51-65
Surface chemistry of catalysis by gold R Meyer, C Lemire, Sh K Shaikhutdinov & Hans-Joachim Freund, 2004, 37(1/2), 72 – 124
The aurophilicity phenomenon: A decade of experimental findings, theoretical concepts and emerging applications H Schmidbaur, 2000, 33(1), 3-10
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April 29th, 2009
Fire Protection
This piece in the UK’s Daily Telegraph features the launch of a new advanced fireman helmet. Traditional it isn’t and the story likens the helmet to the head gear of a Star Wars stormtrooper.
The visor of the helmet has a gold-plated coating. The high reflectivity and low emissivity of gold, as well as its lack of tarnishing mean the metal is used in a number of applications in the control of radiant energy. Papers published in Gold Bulletin provide a good explanation of the science behind this here and here ……….
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April 24th, 2009
You can’t always be the star
Using the analogy of a Hollywood blockbuster, sometimes gold is the ‘Leading Actor’ in a new technology and sometimes it is a ‘Supporting Actor’. Many of the technologies we highlight on this blog are based on a new ’starring role’ for gold, whether it be exploiting the unique catalytic properties of gold in chemical processing or using the properties of gold at the nanoscale for biomedical applications.In this new technology, gold isn’t the ’star’, but is nevertheless a key component of a potential new technology. The technology is a highly sensitive ‘artificial nose’ that has the potential to detect various molecules individually. The key components in the technology are nanostrings made of non-conducting material, but gold electrodes (produced through standard etching techniques) are an integral part of the system.
This is a good example of how gold continues to be a key ’supporting actor’ in the electronics industry.
PS – the Gold Bulletin archive contains all the journal’s papers focused on gold in electronics here
Richard Holliday
Tricia Harris
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