Sildenafil is the active ingredient in Viagra tablets.Sildenafil was re crystallised in 10% alcohol and allowed to air dry, then adhered onto a SEM stub using double sided carbon adhesive discs, prior to viewing the sample was gold coated in an Emitech K550 Sputter Coater for 2 minutes at 20mA. The coated sample was then transferred into a FEI XL30 Scanning Electron Microscope and imaged at 10KV using a high tilt angle. High definition digital images were captured and imported into Photoshop for enhancing and colouring.

Courtesy of David McCarthy

Taken by Quanta SEM microscope

ZnO coated with Au, Pd

Courtesy of Dr. Aldona Nowicka , Maria Curie-Sklodowska University in Lublin

Taken by Quanta SEM microscope

Dehydrated and sputtered with Au/Pd Prepared by Claudia Mayrhofer Coloured by Margit Wallner

Courtesy of Angelika Reichmann

Taken by Quanta SEM microscope

ILLITE CLAY IN PORES OF SEDIMENTARY ROCKS

Courtesy of Eduardo Palacios

Taken by DualBeam microscope

Dentinal tubules viewed after demineralization using etching with 37% phosphoric acid for 15 seconds and 10% sodium hypochlorite for 1 minute.

Courtesy of FRANCISCO RANGEL

Taken by Quanta SEM microscope

charging around a tungsten wire

Courtesy of Martina Dienstleder

Taken by DualBeam microscope

Polyimide Removal on a Package

Courtesy of FEI

Taken by Vion Plasma microscope

Image shows Gallium Microsphere grown by MOCVD (metalorganic chemical vapor deposition) with a fractal type deposit, possibly a carbon nanomembrane, on its surface. Part of the structure takes a conical shape, connecting the particle to the substrate. Courtesy of Dr. Marco Antonio Sacilotti (UFPE/DF) who is co-author of the image and responsible for this scientific research.

Courtesy of Mr. FRANCISCO RANGEL , MCTI/INT

Taken by Quanta SEM microscope

Dendritic cells stimulated with adjuvant silicon microparticles interact with T cells.

Courtesy of Rita Serda

Taken by Nova NanoSEM microscope

two crystals linked together

Courtesy of Dr. massimo tonelli , University of Modena

Taken by Nova NanoSEM microscope

Structure of diatom cell

Courtesy of Ekaterina Nikitina

Taken by Quanta SEM microscope

Reconstitution of a membrane protein into liposomes

Courtesy of Jennifer Wingard

Taken by Tecnai microscope

This is an image of the surface of a cactus spine.

Courtesy of Dr. Xin Zhang , Simon Fraser University

Taken by Helios NanoLab microscope

Eutectoid decomposition of austenite to ferrite and cementite (Fe3C)

Courtesy of Gilberto Del Rosario

Taken by Nova NanoSEM microscope

Part of integrated curcuit http://npimport.ru

Courtesy of Ms. Marina Frolova , JSC Nanopromimport

Taken by Inspect microscope

A toy guitar's rope

Courtesy of Dr. Maria Carbajo , UNIVERSIDAD DE EXTREMADURA

Taken by Quanta 3D microscope

Sample of gasoline residue

Courtesy of Vanessa Colombini

Taken by Quanta SEM microscope

Secondary electron image of tartrate crystals, sometimes called wine diamonds found on the bottom of a red wine cork. Chemically these crystals are known as potassium bitartrate. They’re formed when tartaric acid, a natural component found in grapes, binds with potassium under cold conditions to form a crystalline salt. (Image collected by Darlene McAllister.)

Courtesy of Ashley Moore

Taken by Quanta SEM microscope

Several erythrocytes on the surface of collagen fibres in the eye

Courtesy of Natalia Shevlyagina

Taken by Quanta SEM microscope

ZnO micro-flowers obtained by hydrothermal synthesis using microwave heating.

Courtesy of Mr. FRANCISCO RANGEL , MCTI/INT

Taken by Quanta SEM microscope

The in vivo interaction between a wild type P. aeruginosa biofilm, on a silicone implant, and the responding polymorphonuclear leukocytes. SEM visualization depicts the interaction at day 1 post insertion of the implant in peritoneal cavity of a mouse. The leukocytes (yellow) are killed by the bacteria (cyan), as seen from their damaged appearance, with obvious cavities in the membrane, after contact with the WT biofilm.

Courtesy of Michael Larsen

Taken by Quanta 3D microscope

Mesoporous Silica -  Uncoated mesoporous silica (SBA-15) imaged at very high magnification with 800eV landing energy and 3pA beam current, to reveal the pore structure with minimum beam damage and charging. Product: Helios NanoLab DualBeam

Taken by Helios NanoLab microscope

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

corrosion in nano scale of copper crystals faces

Courtesy of wadah mahmoud

Taken by Inspect microscope

Short circuit causing dendrites.

Courtesy of Mr. Daniel Rigler , Budapest University of Technology and Economics

Taken by Inspect microscope