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SEM

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Amaryllis Stigma Pollination

Amarylis stigma (pink) with pollen grains (yellow) adhering to sticky glands on its surface. Some pollen tubes (olive green) carrying genetic material can be seen on top of the stigma. Imaged in low vacuum without prior dehydration. Dynamic focus and long working distance used for depth of focus.

Courtesy of Paul Gunning

Taken by Inspect microscope

Magnification: 62x
Detector: LFD
Voltage: 10kV
Vacuum: 24 Pa
Horizontal Field Width: 4.83 mm
Working Distance: 15.3 mm
Spot: 2.5 nA

POLLENS

pollens

Courtesy of Mr. muhammet aydın , Namık kemal university

Taken by Quanta SEM microscope

Dandelions

Hybrid inorganic/polymer based photovoltaic nanodevices offer the promise of low cost large area conversion of solar energy to electricity. Nanostructures of zinc oxide have shown supreme capabilities in emerging technologies ranging from solar energy harvesting to biosensing. However, the ability to control the size and position of these nanostructures is crucial for fabricating nanodevices with remarkable properties and astonishing solar energy conversion efficiencies. Herein, we present a collection of scanning electron micrographs of zinc oxide nanostructures prepared by low temperature hydrothermal methods Image taken and Processed by Luisa Whittaker PhD.

Courtesy of Gerald Poirier

Taken by Quanta SEM microscope

Magnification: 25000x
Sample: ZnO nano wires
Detector: SE
Voltage: 15Kev
Vacuum: -5 torr
Working Distance: 10mm
Spot: 3

Soil Bacteria - Bac spaericus

Bacillus spaericus is a soil Bacteria it can be found in water and the ground. These were grown in culture on Agar.

Courtesy of Oliver Meckes

Taken by Quanta SEM microscope

Magnification: 1600x
Sample: Bacteria
Detector: SE+BSE
Voltage: 20kv
Vacuum: high
Working Distance: app. 8mm

Cupressus Sempervirens Pollen Surface

Cupressus sempervirens pollen surface.

Courtesy of Riccardo Antonelli

Taken by Quanta SEM microscope

Magnification: 40.000 x
Sample: pollen
Detector: SE
Voltage: 25.00 kV
Vacuum: High Vacuum
Horizontal Field Width: 7.46 μm
Working Distance: 6.0 mm
Spot: 3.0

Lighting up the World

Incandescent light bulbs are very inefficient in transforming energy into light. Since about 20% of the world’s total electricity consumption is used for lighting, a new and more efficient light source has to be developed. One solution is solid-state lighting, which employs light-emitting diodes (LEDs) made from semiconducting materials. The image shows the cathodoluminescence (CL) from an LED excited by the electron beam of an FEI Quanta 250. CL imaging helps to understand the properties of these LEDs and gives valuable insight into prevalent defects, such as the ring-shaped defect in the image, in order to improve the devices.

Courtesy of Dr. Jochen Bruckbauer , University of Strathclyde, Department of Physics

Taken by Quanta SEM microscope

Sample: InGaN/GaN LED
Voltage: 5 kV
Horizontal Field Width: 20 µm
Working Distance: 10
Spot: 4.0

Detail of 3 Chip Stack (1 of 3)

Courtesy of Fraunhofer-Munich

Taken by Vion Plasma microscope

Voltage: 30 kV
Horizontal Field Width: 24.9 μm

Mineral Vegetation

natural calcium-magnesium mineral deposit

Courtesy of Thierry Thomasset

Taken by Quanta SEM microscope

Magnification: 2000x
Detector: SED
Voltage: 20 kV
Vacuum: HiVac
Horizontal Field Width: 80.5 μm
Working Distance: 10 mm
Spot: 3 nA

Sexy Beetle Antenna

Detail of the antennal base of the beetle Elater ferrugineus (Insecta, Coleoptera)

Courtesy of Dr. Andrea Di Giulio , University Roma Tre, Department of Science

Taken by Helios NanoLab microscope

Magnification: 647x
Sample: insect gold sputtered
Detector: SE
Voltage: 5 kV
Vacuum: 3 mbar
Horizontal Field Width: 461 μm
Working Distance: 4.2
Spot: -

Zinc Oxide Flower

This image shows the growth of hexagonal pyramid-shaped zinc oxide crystal during synthesis by pyrolysis in oxidizing atmosphere. Co-authors: Luis Flores and Juan M. Quintana

Courtesy of Miguel Avalos-Borja

Taken by Quanta SEM microscope

Magnification: 3000x
Sample: Zinc oxide
Detector: ETD
Voltage: 25 kV
Horizontal Field Width: 50 um
Working Distance: 10
Spot: 5

Graphene Layers

Twinning defects in Bilayer (flower) and Trilayer (hexagon, bottom) Oriented graphene sheets are revealed by contrast changes in this series of Warhal-inspired Dark-Field TEM images. Strain induced Moire patterns (hexagon, top) are caused by a small lattice mismatch in the first and third layers. The layers are colored by their thickness, and each of the six images correspond to a different diffraction peak, providing unique information regarding the nature of these defects.

Courtesy of Lola Brown

Taken by Tecnai microscope

Sample: CVD Graphene on thin Silicon Nitride
Voltage: 80 kV
Horizontal Field Width: 9.4 microns (each)
Spot: 1

Larva of Asian Tiger Mosquito

Mouthparts filter of an aquatic larva of third age of Asian Tiger mosquito (Aedes albopictus).

Courtesy of Riccardo Antonelli

Taken by Quanta SEM microscope

Magnification: 800x
Sample: Peltier Stage
Detector: GSED
Voltage: 15.00 kV
Vacuum: ESEM
Horizontal Field Width: 373μm
Working Distance: 6.4mm
Spot: 4.5

Antifouling Paint

This cristal is the biocide of an antifouling painting

Courtesy of Mr. Nicolas GAYET , IFREMER

Taken by Quanta SEM microscope

Magnification: 2035
Detector: SE
Voltage: 5kV
Horizontal Field Width: 147
Working Distance: 10.3mm
Spot: 4.0

single pollen

pollen

Courtesy of Mr. MUHAMMET AYDIN , Namık kemal university

Taken by Quanta SEM microscope

Magnification: 8000
Detector: LFD
Voltage: 2
Working Distance: 9.1
Spot: 3.5

Platinum Oxide

SEM top view of a Platinum oxide film deposited by atomic layer deposition. PtO2 transforms locally to metallic Platinum. The Pt-area extends each cycle of the ALD process concentrically.

Courtesy of Adrie Mackus

Taken by DualBeam microscope

Magnification: 200x
Sample: Platinum oxide on silicon oxide
Detector: SE
Voltage: 5 kV
Horizontal Field Width: 640 microns
Working Distance: 4.8
Spot: 1.6 nA

Silica Microsphere and Polymer Impact

A silica microsphere (3.7um dia.) impacts a polymer composite comprising 20nm thick hard and soft layers. Initially the layers were aligned in the vertical direction and deformed by the 1.1km/s speed impact.

Courtesy of Jae-Hwang Lee

Taken by Helios NanoLab microscope

Magnification: 17,500x
Sample: Self-assembled block copolymer (PS-b-PDMS)
Detector: SE TLD
Voltage: 2kV
Horizontal Field Width: 7.31 um
Working Distance: 4.1 mm

Egg of Aedes Aegypti

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.

Courtesy of Francisco Rangel

Taken by Quanta SEM microscope

Magnification: 2000x
Sample: Insect egg.
Detector: Mix: BSE and SE
Voltage: 20 kV
Vacuum: 121 Pa
Horizontal Field Width: 149
Working Distance: 9.9
Spot: 3.0

Zinc Oxide Urchin

Urchin-like zinc oxide

Courtesy of Amal Al Ghaferi

Taken by Quanta SEM microscope

Magnification: 77315x
Sample: ZnO
Detector: SE
Voltage: 5 kV
Horizontal Field Width: 1.00 μm
Working Distance: 10.1
Spot: 2.5

Mouse Lung

I took this SEM from mouse lung during my Microscopy course

Courtesy of Mr. SEYYED HABIB ALAVI , Oklahoma State University

Taken by Quanta SEM microscope

Magnification: 50000
Working Distance: 10.2

Nano Graphite Rabbit

Graphite shells arranged in a very interesting way.

Courtesy of Douglas Rodrigues Miquita

Taken by Tecnai microscope

Magnification: 285,000x
Voltage: 200 kV

Arachnoidiscus Ehrenbergii

Structure of diatom cell

Courtesy of Ekaterina Nikitina

Taken by Quanta SEM microscope

Magnification: 4000 x
Detector: ETD
Voltage: 25.64 kv
Working Distance: 15.3 mm

Alloy Mixture

Eutectoid decomposition of austenite to ferrite and cementite (Fe3C)

Courtesy of Gilberto Del Rosario

Taken by Nova NanoSEM microscope

Magnification: 6000x
Sample: carbon steel
Detector: ETD
Voltage: 4
Horizontal Field Width: 50
Working Distance: 4.7
Spot: 3.5

J shaped nanostructures

J`s like nano structures made out of 130 nm gold thick adhered by 5nm Ti on the surface of 25x25 mm quartz substrate.

Courtesy of Mrs. Nadia Abdulrahman , Glasgow University

Taken by Nova NanoSEM microscope

Magnification: 79,079
Detector: Helix
Voltage: 30 kV
Vacuum: 3 mbar
Horizontal Field Width: 2.00 um
Working Distance: 5.2
Spot: 3.5

Cigarette Filter

Cross-transverse view of a cigarette filter, showing cellulose acetate fibers.Research conducted by Laboratório de Tabaco e Derivados (LATAB)/Divisão de Química Analítica(DQAN)/ INSTITUTO NACIONAL DE TECNOLOGIA (INT). Smoking is a trap. Quit now!

Courtesy of Francisco Rangel

Taken by Quanta SEM microscope

Magnification: 1000X
Sample: cellulose acetate fibers
Detector: Mix: SE + BSE
Voltage: 10 kV
Vacuum: 131 Pa
Horizontal Field Width: 298 μm
Working Distance: 15
Spot: 4.5

Polystyrene Point

self-organized 300nm polystyrene spheres

Courtesy of Tom Yuzvinsky

Taken by Quanta 3D microscope

Magnification: 40,000X
Sample: polystyrene spheres
Voltage: 10kV
Horizontal Field Width: 1 μm
Working Distance: 8.3mm