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SEM

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Palladium encapsulated in silicon oxide nanotubes

SEM images of palladium encapsulated in silicon oxide nanotubes were taken in a high vacuum mode using a mixed signal from SE and BSE detectors.

Courtesy of Dr. Svetlana Neretina , Temple University

Taken by Quanta SEM microscope

Magnification: 20,000x
Sample: palladium, silicon oxide nanotubes
Detector: SE and BSE
Voltage: 30 kV
Vacuum: high vacuum
Horizontal Field Width: 10.4 um
Working Distance: 8.7 mm

ZnO Nanowire Haystack

A haystack of ZnO Nanowires on Si substrate.

Courtesy of Peter Heß

Taken by Nova NanoSEM microscope

Magnification: 2500x
Sample: ZnO
Detector: ETD
Voltage: 5 kV
Vacuum: 0.00000536681 mbar
Horizontal Field Width: 120 μm
Working Distance: 5.1 mm
Spot: 2 nA

Kaolinite Clay Sheets

Kaolin clay sheets

Courtesy of wadah mahmoud

Taken by Inspect microscope

Magnification: 24000x
Sample: dolomite rocks
Detector: SE
Voltage: 5 kv
Horizontal Field Width: 5 micron
Working Distance: 11.5
Spot: 3 nA

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

Stacked material

Stacked inorganic material.

Courtesy of Dr. Erico Teixeira Neto , LME-CNPEM

Taken by Inspect microscope

CleanCHK5

Taken by Explorer 4 CleanCHK microscope

Zinc Oxide

Zinc Oxide crystal from a used refractory.

Courtesy of Laura Schlimgen

Taken by XL SEM microscope

Magnification: 150
Detector: BSE
Voltage: 25
Horizontal Field Width: 200
Working Distance: 14.2
Spot: 7.0

Zinc crystals

Zinc crystals that have been adsorbed on the surface of an alginate gel after being subjected to a process of wastewater treatment.

Courtesy of Dr. Maria Carbajo , UNIVERSIDAD DE EXTREMADURA

Taken by Quanta SEM microscope

Magnification: 15000x
Sample: Alginate gel
Detector: SE
Voltage: 15 kV
Vacuum: 10-3 Pa
Horizontal Field Width: 20 μm
Working Distance: 10.3 mm
Spot: 5.0

Dracocephalum nectary

Dracocephalum nectary, critical point dried, coated with Au/Pd

Courtesy of Mr. Michał Rawski , Maria Curie-Sklodowska University in Lublin

Taken by Quanta 3D microscope

Magnification: 100x
Sample: plant tissue
Detector: ETD
Voltage: 2 kV
Vacuum: 5.87e-4 Pa
Horizontal Field Width: 1.49 mm
Working Distance: 9.8
Spot: 4.5

Cigarette Filter Fibers II

Cross-transverse view of a cigarette filter, showing cellulose acetate fibers. Ingestion or inhalation of fragments of cigarette filter fibers is a health problem for almost all smokers, but also contributes to the formation of lung cancer. Smoking is a trap. Quit now!

Courtesy of Mr. FRANCISCO RANGEL , MCTI/INT

Taken by Quanta SEM microscope

Magnification: 5000x
Sample: Cigarette filter fibers
Detector: MIX: SE plus BSE
Voltage: 20 kV
Vacuum: 110 Pa
Horizontal Field Width: 59.7 µ
Working Distance: 15.1
Spot: 3.0

Macrophage Tunneling Nanotubes

Mouse macrophages communicate through bridges known as tunneling nanotubes. The nanotubes are active sites involved in endocytosis of nano particles and transport of nanoparticles between cells. This image was taken at a 52 degree tilt and the nanoparticles were false-colored red.

Courtesy of Dr. Rita Serda , University of New Mexico

Taken by Quanta 3D microscope

Magnification: 25,000
Sample: mouse macrophages
Detector: SE
Voltage: 30 kV
Horizontal Field Width: 15 um
Working Distance: 10
Spot: 7.0

organic river

small nerve within teeth dentin

Courtesy of wadah mahmoud

Taken by Inspect microscope

Magnification: 20,000x
Sample: teeth section
Detector: SE
Voltage: 2 kV
Vacuum: high vacuum
Working Distance: 15.0
Spot: 3.0

Polymethyl Methacrylate

Electrospun polymethyl methacrylate(PMMA) fibres.

Courtesy of Urszula Stachewicz

Taken by Inspect microscope

Magnification: 3000x
Detector: SE
Voltage: 10 kV
Working Distance: 9.9 mm
Spot: 3.5 nA

BACTERIA

Bacteria (one of them is a bacterium) are very small organisms. Almost all bacteria are so tiny they can only be seen through a microscope. Bacteria are made up of one cell, so they are a kind of unicellular organism.

Courtesy of Mr. sathish - , Christian medical collage.vellore (CMC)

Taken by Tecnai microscope

Magnification: 43.000 x
Sample: cell culture
Detector: -
Voltage: 40 kv
Vacuum: 4mbar
Working Distance: 4.0
Spot: 1.0

Colonies of Bacteria

Bacteria deposition on carbonate fluvial system

Courtesy of Mariano Davoli

Taken by Quanta SEM microscope

Magnification: 30000x
Detector: SE
Voltage: 20 kV
Vacuum: High vacuum
Horizontal Field Width: 9.01 μm
Working Distance: 10.7 mm
Spot: 3.5 nA

Frozen polymer

Aqueous polymeric film dried under vacuum environment.

Courtesy of Dr. Erico Teixeira Neto , LME-CNPEM

Taken by Inspect microscope

Mechanical Pencil Lead 0.7mm

The typical position when the fracture of the graphite occurs.

Courtesy of Francisco Rangel

Taken by Quanta SEM microscope

Magnification: 250x
Sample: Lead automatic pencil
Detector: Mix: SE + BSE
Voltage: 20 kV
Horizontal Field Width: 1188.2 μm
Working Distance: 44.2
Spot: 5.0

ESEM - Calcium sulfphate dihydrate.

The hydration of calcium sulphate hemihydrate (CaSO4.0,5H2O) leads to gypsum (calcium sulphate dihydrate – CaSO4.2H2O). It is a highly exothermic reaction which occurs by a dissolution/reprecipitation mechanism: when the hemihydrate is mixed with water, a fraction of it dissolves to give a saturated solution with respect to Ca2+ and SO4 2- ions, which is supersaturated with respect to calcium sulfphate dihydrate leading to nucleation and crystal growth. ESEM images taken from the hemihydrate hydration process. One can follow water adsorption to the hemihydrate at a 100% RH and the resulting needle-like crystals which result after water elimination.

Courtesy of FRANCISCO RANGEL

Taken by Quanta SEM microscope

Magnification: 7108x
Sample: Gypsum (CaSO4·2H2O).
Detector: GSED
Voltage: 20 kV
Vacuum: 300 Pa
Horizontal Field Width: 42.0 μm
Working Distance: 10.0 mm
Spot: 3.0 nA

Platinum Oxide Film

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 Diana Garcia-Alonso

Taken by DualBeam microscope

Magnification: 250x
Sample: Platinum oxide on silicon oxide
Detector: SE
Voltage: 5 kV
Horizontal Field Width: 512 microns
Working Distance: 4.7 mm
Spot: 1.6 nA

Gold on Tantalum Surface

Gold flakes and nanoparticles

Courtesy of wadah mahmoud

Taken by Inspect microscope

Magnification: 10326x
Sample: gold
Detector: SE
Voltage: 5 kV
Horizontal Field Width: 10 micron
Working Distance: 11.6 mm
Spot: 3.5 nA

Magnetite Crystals

Magnetite contamination particle on 70° tilted specimen. All parts of the particle are individual magnetite crystals

Courtesy of Rene de Kloe

Taken by Quanta SEM microscope

Magnification: 5500x
Sample: contamination particle on NiAs substrate
Detector: SE
Voltage: 25
Vacuum: 4 x 10-4 Pa
Horizontal Field Width: 28.7 µm
Working Distance: 13.1 mm
Spot: 5

Snowflakes

Snowflakes, as were imaged on HR-SEM at cryogenic conditions (-145 deg C).These are found to be contamination of original sample surface

Courtesy of Olga Kleinerman

Taken by Quanta SEM microscope

Magnification: 483x
Sample: solution of CNTs in chlorosulfonic acid
Detector: SE
Voltage: 1 keV
Vacuum: 3E-6 mbar
Horizontal Field Width: 88644.5 micron
Working Distance: 2.5 mm
Spot: 3

Wave of salts

Salt particles scattered over a SiN substrate

Courtesy of Mr. Marien Bremmer , Leiden Institute of Physics

Taken by Tecnai microscope

Sample: SiN / Salt
Voltage: 200
Spot: 3.0

Illite clay

Hairy illite clay

Courtesy of Dr. jim buckman , Heriot-Watt University

Taken by Quanta SEM microscope

Magnification: 6000
Sample: Illite clay in North Sea reservoir rock
Detector: MIxed BSED / LFD (40/60)
Voltage: 20 kV
Vacuum: 0.82 Torr
Horizontal Field Width: 34.5
Working Distance: 7.5 mm
Spot: 2.5

Mineral flower

Galena crystals on massive pyrite matrix.

Courtesy of Ivan Jimenez Boone

Taken by MLA microscope

Magnification: 1500x
Detector: BSE
Voltage: 25kV
Working Distance: 9.9
Spot: 6.4