2012 Image Contest Monthly Winners

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September Winners

Category: Natural World

Zebrafish

Courtesy of David McCarthy

The Scanning Electron Microscope (SEM) image is of the head of an embryonic Zebrafish. This is a model organism currently being used for studies into the genetic causes of neurodegeneration. This research project involves Kim Wager, a Ph.D. student jointly supervised by Dr Claire Russell (RVC) and Professor Robert Harvey (UCL School of Pharmacy). The Zebrafish was imaged under a FEI Quanta 200F Scanning Electron Microscope. Firstly, the sample was chemically fixed in 4% (w/v) paraformaldehyde in 0.1M Sodium Cacodylate buffer, followed by dehydration in graduated alcohol and drying in a Leica Critical Point (CPD300) dryer. Prior to imaging, the specimen was given a 5nm gold coating in a Quorum Q150 Sputter coater and imaged at 5KV. In addition, a high tilt angle of 65 degrees enhanced the full structure of the head region. A high-resolution digital image was captured, imported into Photoshop and was artistically coloured by Ms Annie Cavanagh.

Image Details

Magnification: 500
Sample: Biological
Detector: SE
Voltage: 5KV
Vacuum: 112/e-3 Pa
Horizontal Field Width: 512
WorkingDistance: 15mm
Spot: 2

Taken by Quanta SEM

Category: Around the House

Aphid on a Leaf

Courtesy of Karin Whitmore

Aphid on a leaf

Image Details

Magnification: 85x
Sample: Aphid
Detector: LFD
Voltage: 5kV
Vacuum: 4.02E-4bar
Horizontal Field Width: 3.3mm
WorkingDistance: 6.0
Spot: 2.0

Taken by Quanta SEM

Category: The Human Body

3D Reconstruction Hepatitis B Virus Core

Courtesy of Daniel Beniac

Cryo TEM of Hepatitis B virus core with 3D reconstruction overlay

Image Details

Magnification: 80,000x
Detector: CCD
Voltage: 200 kV

Taken by Tecnai

Category: Other Science

Cretaceous sedimentary rocks

Courtesy of Dr Duncan Pirrie and Dr Gavyn Rollinson

Cretaceous sedimentary rocks which occur on Snow Hill Island Antarctica, include spectacular mounds dominated by fossil bivalves. In amongst the bivalves are complex carbonate mineral cements, interpreted to have formed as a result of methane seeping through the sediments on the Cretaceous sea floor. The carbonate cements are complex but this QEMSCAN fieldscan image allows us to map the texture of polished thin sections of these spectacular rocks. Image size is 11mm square and mapped at 5 microns x-ray resolution. Image courtesy of Dr Duncan Pirrie and Dr Gavyn Rollinson, CSM,UOE,UK.

Image Details

Magnification: 45x
Detector: X-ray map via Bruker SDD
Vacuum: 2x10-06 Torr
Horizontal Field Width: 300um
WorkingDistance: 23mm

Taken by QEMSCAN

August Winners

Category: Natural World

Geranium dissectum pollination

Courtesy of Riccardo Antonelli

Geranium dissectum pollination

Image Details

Magnification: 500x
Detector: LFD (Low vacuum)
Voltage: 12.50 kV
Vacuum: Low vacuum
Horizontal Field Width: 298 μm
WorkingDistance: 5.1 mm
Spot: 4.0

Taken by Quanta SEM

Category: Around the House

Ground coffee

Courtesy of Maria Carbajo

The image shows the porous structure of ground coffee.

Image Details

Magnification: 500x
Sample: coffee
Detector: SE
Voltage: 2.0 kV
Vacuum: 5.3e-4 Pa
Horizontal Field Width: 596 μm
WorkingDistance: 10.2 mm
Spot: 5.0

Taken by Quanta 3D

Category: The Human Body

Podocytes - Mouse kidney

Courtesy of Matt Sharp

Mouse kidney fractured to show podocytes

Image Details

Magnification: 12000x
Sample: Kidney
Detector: SE
Voltage: 10 kV
WorkingDistance: 5.36 mm
Spot: 4

Taken by Quanta SEM

Category: Other Science

Egg of Aedes Aegypti

Courtesy of Francisco Rangel

The Aedes aegypti mosquito originated in Africa but is now found in tropical and subtropical regions throughout the world. The mosquito is a vector for transmitting several tropical diseases such as dengue fever.

Image Details

Magnification: 600x
Detector: Mix: BSE + SE
Voltage: 20 kV
Vacuum: 120 Pa
Horizontal Field Width: 497 μm
WorkingDistance: 9.9 mm
Spot: 3.0

Taken by Quanta SEM

July Winners

Category: Natural World

Spider Skin

Courtesy of CARBAJO MARIA

Texture of the skin of a spider, with a hair root and brochosomes from a leafhopper preyed upon by the spider

Image Details

Magnification: 12000x
Sample: spider
Detector: ETD
Voltage: 10
Vacuum: 2.7e-3 Pa
Horizontal Field Width: 24.9
WorkingDistance: 10
Spot: 5

Taken by Quanta 3D

Category: Around the House

Mais Staerke 400x

Courtesy of Ottawa Nicole

A cracked grain of corn showing the starch within the cells.

Image Details

Magnification: 400x
Sample: biological
Detector: SE+BSE+BSE
Voltage: 7kv
Vacuum: high
WorkingDistance: 10mm
Spot: 3

Taken by Quanta SEM

Category: The Human Body

Intestinal Bacteria

Courtesy of Oliver Meckes

The human intestine contains hundreds of differend kinds of bacteria. Some of it can be seen here.

Image Details

Magnification: 7500x
Sample: Bacteria, intestine,
Detector: SE+BSE
Vacuum: high
WorkingDistance: 10mm
Spot: 3

Taken by Quanta SEM

Category: Other Science

Aphid Chaitophorus sp. on Populus Alba Leaf.

Courtesy of Riccardo Antonelli

Live aphid Chaitophorus sp. on Populus alba leaf.

Image Details

Magnification: 150x
Sample: Live aphid
Detector: LFD (Low vacuum)
Voltage: 12.50 kV
Vacuum: 0.975 Torr
Horizontal Field Width: 995 μm
WorkingDistance: 10.4 mm
Spot: 4.0

Taken by Quanta SEM

June Winners

Category: Natural World

Methane Eating Bacteria Moss

Courtesy of Michal Rawski

Moss, which is host for methane eating bacteria

Image Details

Magnification: 500x
Voltage: 2.0 kV
WorkingDistance: 9.6 mm

Taken by Quanta 3D

Category: Around the House

Tungsten filament

Courtesy of Gerald Poirier

Household incandescent lamps use Tungsten filament because of their electrical and mechanical properties. Tungsten has strength, ductility and workability, tungsten can readily be formed into the filament coils use in bulbs.

Image Details

Magnification: 59x
Sample: Tungsten
Detector: SE
Voltage: 15Kev
Vacuum: -5 torr
WorkingDistance: 10.8
Spot: 3

Taken by Quanta SEM

Category: The Human Body

WAR IN OUR HUMAN TRENCHES

Courtesy of David Pérez-Morga

The captions shows the dramatic encounter, in the liver, of our unsung heroes, the immune cells, and an invading parasite, the trypanosome. Each side bears an impressive arsenal of chemical weapons that will define at the end the unset, or not, of the Sleeping Sickness. Courtesy of Daniel Monteyne, Gilles Vanwalleghem, Etienne Pays, David Pérez-Morga and CMMI at the Université Libre de Bruxelles.

Image Details

Magnification: 8658.29x
Sample: Hepatic cells
Detector: Etd SE
Voltage: 20 kV
Horizontal Field Width: 3062.5 μm
WorkingDistance: 6.85
Spot: 3.00

Taken by Quanta SEM

Category: Other Science

Silver Clusters - Invisible Worlds

Courtesy of Luca Boarino

Silver clusters deposited by thermal evaporation onto self-assembled polystyrene nano-spheres (900 nm). Inspect F SEM FEG @ Nanofacility Piemonte INRIM. Self-assembled polystyrene nanospheres are used as masks for thin films and materials nanostructuration on large area. Maybe the subject doesn't match the topics of this year, but surely the title fits.

Image Details

Magnification: 50000x
Sample: Polystyrene and Silver on silicon wafer
Detector: SE
Voltage: 2 kV
Vacuum: .2 mbar
Horizontal Field Width: 2 µm
WorkingDistance: 10.2
Spot: 3

Taken by Inspect

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