2017 Image Contest Monthly Winners

December Winners  |   November Winners  |   October Winners  |   September Winners  |   August Winners  |   July Winners  |  

December Winners

Category: SEM

Brain fiber

Courtesy of Mr. Abel Major

Fibres made by electrospinning. The aim was to create biocompatible polymer gel scaffolds to substitute the ECM (extracellular matrix). It was made from PASP (poly(asparatic acid)) modified to PSI (poly(succinimide)) and was drawn by electrospinning. It is a very effective procedure to make very thin, (some) hundred nanometer scale fibres by using electric force to draw charged threads of polymer solutions in order to make tissue alike structure. PSI is a biodegradable and it is promising for regenerative medicine and tissue engineering.

Image Details

Magnification: 5000x
Sample: Electrospinning fiber
Detector: T1
Voltage: 2 kV
Vacuum: High vacuum
WorkingDistance: 4,03 mm
Spot: 13 pA

Taken by Apreo

Category: TEM

Love

Courtesy of Dr. Wann-neng Jane

The elaioplast was present in tapetum of Cleome hassleriana.

Image Details

Magnification: 17500x
Sample: Plant anther
Voltage: 80kV
Vacuum: High vacuum
Spot: 1.0

Taken by Tecnai

Category: DualBeam

Merry Christmas

Courtesy of Dr. Thomas Loeber

The pyramidal tip of an AFM cantilever was partially cut off with a FIB system. In the truncated pyramid three glass spheres were stacked on top of each other. A SNOM cantilever with one glass sphere is used for diffuse light scattering. For fun the snowman was sketched.

Image Details

Magnification: 8000
Detector: ETD
Voltage: 2
Horizontal Field Width: 25.9
WorkingDistance: 4

Taken by Helios NanoLab

November Winners

Category: SEM

Leg of a Spider

Courtesy of Mr. Oliver Meckes

The Leg of a Ant- mimiking spider has a small claw and lots of brush- like hair that adhere on flat surfaces (Van-der-Waals-force)

Image Details

Magnification: 400x
Sample: biological, coated with gold
Detector: SE, BSE, BSE
Voltage: 7kv
Vacuum: high vac
WorkingDistance: app 10mm
Spot: 3

Taken by Quanta SEM

Category: TEM

Wrapping Paper

Courtesy of Dr. Eric Formo

Strontium manganite, SrMnO3, is a member of the perovskite family of materials which are widely researched for use in efficient solar cells. A festively colored SrMnO3 nanosheet is pictured here using high resolution transmission electron microscopy with atomic resolution. The red and green bands show the intricate layered structure that results in the unique properties of these manganites.

Image Details

Taken by Talos

Category: DualBeam

Nano satellite antenna network

Courtesy of Ms. Marina Raschetti

Result of plasma etching on silicon, with a Cr mask and a lot of undercut. Some of the antenna moved during the picture acquisition.

Image Details

Magnification: 12000x
Sample: Silicon and chromium
Detector: SE
Voltage: 5 kV
WorkingDistance: 4.2 mm

Taken by Helios NanoLab

October Winners

Category: SEM

Planet #1

Courtesy of Dr. Eric Formo

Micrometeorites are extraterrestrial dust particles, including fragments of comets and asteroids, that reach Earth's surface in impressive numbers: ~40,000 tonnes each year. Samples from traditional collection sites like Antarctica have been well-studied by scientists because they contain important information about the composition and distribution of materials in our Solar system. In recent work, we have isolated micrometeorites in populated areas, such as building rooftops on UGA's campus in Athens, GA.

Image Details

Taken by VolumeScope

Category: TEM

NanoMonster

Courtesy of Dr. Sarah Briceño

Fungal infected chitosan iron nanoparticles

Image Details

Magnification: .
Sample: Iron nanoparticles
Detector: .
Voltage: .
Vacuum: .
Horizontal Field Width: .
WorkingDistance: .
Spot: .

Taken by Tecnai

Category: DualBeam

Diamond needle in silicon holder

Courtesy of Dr. Ekaterina Obraztsova

MIcrometer-size monocrystalline diamond needle being picked up, rotated and fixed by Pt deposition in ion-beam milled aperture in Si substrate for further studies of its optical properties. The images were obtained during the visit to CIC NanoGune, San Sebastian, Spain under supervision of Prof. A. Chuvilin.

Image Details

Magnification: 1500
Sample: Silicon + diamond
Detector: ICE
Voltage: 5
Vacuum: -
Horizontal Field Width: 138 um
WorkingDistance: 4,3
Spot: -

Taken by Helios NanoLab

September Winners

Category: SEM

Chip Morphology

Courtesy of Mrs. Christine Kimpton

Chip morphology is studied to understand material deformation under shear. Sample 1 was produced by drilling with a Titanium Nitride coated drill with spindle speed of 10,000 RPM and 20mm/min feed rate. The chip from the sample shows long ribbon entangled chips. Adiabatic shear bands can be seen showing slip lines in a continuous pattern along the outer chip surface. The image was taken for Rashid and Goel, Precision Engineering at Cranfield University.

Image Details

Magnification: 500X
Sample: Ribbon Chip
Detector: BSE
Voltage: 20Kv
WorkingDistance: 10mm
Spot: 4

Taken by SEM

Category: TEM

Blue nova

Courtesy of Dr. Eric Formo

This image shows the morphology and polydispersity of PtVTiO2 nanocubes synthesized by hydrothermal methods

Image Details

Taken by Tecnai

August Winners

Category: SEM

Dynamic Cell Matrix

Courtesy of Dr. Mark McClendon

The image depicts the interaction between a brain cell known as astrocyte (shown in blue) and a synthetic material (shown in green) that mimics the extracellular environment. The material made of peptides and DNA forms fibrous bundles (highlighted in yellow) that are similar to the ones present in the spinal cord when an injury occurs. The architecture of the synthetic matrix triggers the cell to become reactive as evident by its morphology. Science, October 2018, http://science.sciencemag.org/content/early/2018/10/03/science.aat6141

Image Details

Magnification: 5,200X
Sample: CPD cell with osmium coating
Detector: SE
Voltage: 3kV
Vacuum: 1 e-3Pa
Horizontal Field Width: 30um
WorkingDistance: 10
Spot: 3

Taken by Quanta SEM

Category: DualBeam

Broken Flowers

Courtesy of Mr. Prashant Kumar

This is a three dimensionally ordered material created by casting from a template of polymer spheres. A mixture of Cu-Mg-Al penetrates through the FCC packing of spheres and after calcination at high temperature, to remove the spheres, leaves behind an inverse opal (hexagonal array) structure. The curved regions in the image arise due to defects in packing of spheres, thereby giving rise to these broken flowers.

Image Details

Magnification: 80,000x
Sample: cu-mg-al alloy
Detector: ICE BD
Voltage: 2 kV
WorkingDistance: 3.5 mm

Taken by Helios NanoLab

July Winners

Category: SEM

cascade confetti

Courtesy of Dr. Eric Formo

Hydrothermally synthesized BaFeSi4O10 crystals of varying sizes. We are interested in the hydrothermal chemistry of BaFeSi4O10 both for what insights this method can provide into the geological formation of gillespite, the mineral form of BaFeSi4O1O, and as a potential route for making novel hybrid materials with other metals.

Image Details

Taken by VolumeScope

Category: TEM

Silver heart, Gold decoration

Courtesy of Dr. Ming Lin

A High resolution TEM image clearly demonstrates a core-shell structure. the perfect lattice match between silver and gold gives rise to the growth of gold shell outside the heart-shaped silver core.

Image Details

Magnification: 490,000
Voltage: 200 kV

Taken by Krios

See the winners:

December Winners  |   November Winners  |   October Winners  |   September Winners  |   August Winners  |   July Winners  |