The laser printing technique: by printing copper and gold in turn, the gold helix initially is surrounded by a copper box. Etching the copper away, results in a free standing helix of pure gold.
(Picture: University of Twente)
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![Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.](https://cdn1.vogel.de/ZK7wqjVy7Ps1OSwUs5tXgrNZGEE=/288x162/smart/filters:format(jpg):quality(80)/images.vogel.de/vogelonline/bdb/1964500/1964559/original.jpg "Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963700/1963740/original.jpg "The high resolution, modern TFT touch display has a multi-lingual user interface and shows all important information at a glance.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963400/1963417/original.jpg "The 700kHz, 260-element histotripsy ultrasound array transducer used in Prof. Xu’s lab.")
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:quality(80)/images.vogel.de/vogelonline/bdb/1958800/1958848/original.jpg "The user-friendly unit, which weighs less than ten kilograms and does not require the use of filters, can be powered by a small, portable solar panel.")
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:quality(80)/images.vogel.de/vogelonline/bdb/1963500/1963506/original.jpg "Healthy adults eating a diverse diet with at least eight to ten grams of soluble fiber a day have fewer antibiotic-resistant microbes in their guts. Soluble fiber is found in foods such as grains, beans, lentils, nuts, and some fruits and vegetables.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963400/1963459/original.jpg "Thermo Scientific Dionex Ionpac CS21-Fast-4m ion exchange column.")
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:quality(80)/images.vogel.de/vogelonline/bdb/1710600/1710675/original.jpg "Discover how to set yourself up for success when performing balance-based density determination of solids such as jewelry and precious metals.")
:quality(80)/images.vogel.de/vogelonline/bdb/1682500/1682579/original.jpg "The new XPR Analytical balance redesigned to meet the needs of laboratory technicians of working fast and lean.")
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/cdn4.vogel.de/infinity/white.jpg "The laser printing technique: by printing copper and gold in turn, the gold helix initially is surrounded by a copper box. Etching the copper away, results in a free standing helix of pure gold.")
