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| All Products | Bio-Microscope and Pupil Microscope | Stereo Microscope | Metallurgical Microscope | LED Lamp Microscope | Fluorescent Microscope | Optional Accesories |
A brief History of the Microscope Microscope's Steps
How does a Stereo Microscope work? Types of microscopes
What are microscope parts and functions? Electron Microscopy
World's most powerful microscope starts work The Virtual Microscope
Integrating Video Microscopy and Digital Imaging What is a Video Microscope?
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What is a Video Microscope?
A video microscope is a microscope which generates a live video feed of the object being viewed. There are a number of uses for video microscopes, and amicroscope range of styles are available from models designed for use by hobbyists to high tech versions used in scientific laboratories. Scientific supply companies and science stores often carry video microscopes, and it is also possible to order them directly from manufacturers. It is also possible to purchase video adapters for existing microscopes which can be used to turn them into video microscopes.
With some styles, the microscope is hand held, allowing the user to manipulate it around an object to obtain a magnified image. Other video microscopes have conventional microscope stages on which a specimen is mounted. Hand held versions tend to be popular among hobbyists, while microscopes with stages are used in laboratories.microscope
A video microscope can be extremely useful for things like demonstrations and group instruction. Using the video microscope, a user can manipulate the specimen and area of focus, and people can see the image on a television screen or monitor. The wide field and size of the video image can also be an advantage in a variety of situations, such as a laboratory where people need to be able to manipulate specimens very precisely, and looking through an eye piece while performing delicate work could be challenging.

The microscope can typically connect to a wide variety of screens, ranging from laptop computers to ordinary televisions. This makes the video microscope a highly flexible tool, which can be appealing to hobbyists and useful for fieldwork situations, as the microscope can be carried into the field with a laptop for quick viewing of interesting specimens. A still camera may also be integrated into the design for the purpose of capturing images of particular interest.microscope
In addition to providing a live feed, a video microscope may also be able to record what it sees. This can be useful when a microscope is used to evaluate forensic evidence, as it provides documentation of exactly what happened to the evidence while it was examined. It can also be helpful in the scientific community, as it provides a clear record of a specimen which can be reviewed at a later juncture to look for material which may have been missed during the microscopy session. Videos can also be used in presentations at conferences and scientific events to demonstrate new research.
Article Source:
http://www.szhipower.net/Article/1/detail/92.html

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How does a Stereo Microscope work?
A stereo microscope is generally known as a comparison microscope and it is used in scientific fields primarily for comparing two side by side specimens. A stereo microscope is made up of two regular microscopes connected together with an optical bridge. For instance in forensics, it may be necessary to compare to samples to each other, using a traditional microscope the viewer will need to memorize the contents and switch slides, however with the stereo microscope, the viewer can see both slides side by side at the same time.
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The stereo microscope was invented in the 1920's primarily for forensic ballistics tests and was used in famous cases resulting in convictions. Today the stereo microscope is for the most part the same; however there are a few important enhancements such as digital imaging, fiber optic illumination, video capabilities and attachments to take photos easily.

A stereo microscope is part of the group of microscopes called optical microscopes. Optical microscopes use refractive lenses to help focus light into the eye. These lenses are usually made from glass; however plastic lenses are also used. Most stereo microscopes can reach a magnification of 1500x, but stereo microscopes are often used for lower power magnifications. In addition, stereo microscopes are primarily used to study larger specimens. Besides using ordinary light to study specimens, ultra violet light can be used to study specimens that are biological in nature, infrared light is also used for thick slices of biological tissue.
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http://www.szhipower.net/Article/2/detail/91.html

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Integrating Video Microscopy and Digital Imaging
There has been a major shift in video microscopy over the past decade. Because of advances in imaging technology, video microscopy coupled with digital imaging is moving from a luxury seen only on a few factory floors to becoming the norm in industry today. The days of holding a camera up to an eyepiece on a microscope to capture an often elusive image have ended. Today systems are available that allow users to instantly capture an image, share it and view it on a monitor simultaneously.
The most popular types of vision inspection systems used today are a trinocular stereo microscope or a video lens system. The microscope or lens system is connected to a camera �� generally CCD or CMOS �� and tied into a PC or monitor. Each system has its own pros and cons depending on the application. In addition, by not forcing users to constantly look into microscope eyepieces reduces eye fatigue. microscope

A trinocular stereo microscope system gives a user the ability to see the image in 3-D (when looking into the microscope eyepieces) or a 2-D image when projected onto a monitor. In some applications the ability to see a true 3-D image may be very important. One common complaint when using this type of system is "What I see in the eyepieces of the microscope is different than what is projected onto the video screen." This will almost always be the case. The reason: moving from a 3-D image to a 2-D image, so losing some depth of field is inevitable. In addition to the depth of field loss, depending on the monitor size, the image will be magnified so the field of view will also decrease.
Video lens systems offer a higher magnification range and more lens options than a typical stereo trinocular microscope. While most stereo microscope systems tend to magnify up to 200x, a video lens system can magnify up to 3000x or higher.

Too Many Components
Most systems today are configured with four or five components, and each one is typically provided by a different manufacturer. This integration process of many different components can cause problems. The camera mount may not match the video systems mount thus the need for an adapter. The PC or Laptop may not be compatible with the camera hardware requirements. The measurement/analysis software may not recognize the camera software driver.
To avoid many of these integration problems it is important purchase each individual product from a firm specializing in such integration with the experience to know which components are compatible. If possible it would be advised to see a working demo to insure all components are compatible.
Today, thanks to improvement in technology we are now able to integrate several of the previously individually purchased components into a single product, thus insuring compatibility. One such product is the new scientific camera from Hipower. The scientific camera combines the camera, image capture ability and monitor into one unit.

Direct Image Capture
The system captures images directly onto an SD card. The SD card slot is built directly imicroscopento the camera. By moving the image capture function directly onto the camera a PC or laptop is no longer needed to capture an image. A small 2-inch monitor has also been built into the camera thus removing the need for a monitor. While the unit consolidates many features, it still leaves room for expansion by providing a USB output in the event one wants to use a laptop or PC for image capture. In addition to the USB output a video output is also provided to accommodate a larger monitor. Many other features such as digital zooming, time/date stamp, image manipulation have also been incorporated into the camera.

Ease of Setup
The use of such self-contained plug-and-play systems provides numerous benefits to the manufacturing process and user over traditional microscopes and field built video scopes.
Because of the easy setup, there are no wires to run, software to install, additional hardware to purchase etc. Such a system reduces eye fatigue as well as neck, back and shoulder fatigue from constantly looking down a microscope eyepiece. Less eye and physical fatigue results in higher productivity.
The new system can provide tighter quality control, since each operator has the ability to document all work performed. Overall information sharing among colleges is greatly enhanced. A defect might be exposed in one manufacturing location. Being able to instantly capture that image and email it may prevent it from being duplicated, saving considerable expense.

The all-in-one system means that employee training becomes eamicroscopesier and greatly enhanced. All students are now looking at the same image, unlike the situations when individually viewed under a microscope. Instructors may also record a video file of the training.
The strides made in camera technology have now also allowed for portable digital microscopy. Until recently, portable microscopes had virtually no image capture ability. The specimen had to be taken to the lab to be photographed. The Aven iLoupe camera with a magnification range of 10x-150x allows microscopic images to be taken in the field. This product is essential for quality assurance personnel to be able to instantly capture defects while on the production floor. Field service technicians can now obtain images and send them in real time for evaluation, saving time and money. In addition to the manufacturing industry, this product is used in forensics, archeology, botany and numerous other fields.
Article Source:
http://www.szhipower.net/Article/4/detail/90.html

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A brief History of the Microscope
Oddly enough, the compound microscope was invented before the single lens microscope. But the instruments were not very good to start with and much more could be seen with very small lenses of short focal length.

In about 1597 two Dutch eyeglass makers, Zaccharias Janssen and his son Hans were experimenting with lenses in a tube. They observed that nearby objects viewed through two lenses in line were magnified. Their device was the first compound microscope. However, their lenses were rather large and the magnification obtained was only about 10X. Galileo also designed a compound microscope, but it was only useful for reflected light. Robert Hooke built the first useable British compound microscope in about 1655.

The single lens microscopes made by a Dutch amateur lens grinder Antonie van Leeuwenhoek were far superior to the early compound instruments. Van Leeuwenhoek, in about 1670, developed a method for grinding very small glass lenses. They were tiny, of the order of a millimeter in diameter, and could magnify several hundred times. Mounted in a brass plate these lenses could use transmitted light to image objects in a drop of water on the end of a metal pin. Screws were used to move the pin and focus the specimen. Van Leeuwenhoek was probably influenced by Robert Hooke¡¯s Micrographia (1665) which he might have seen when he visited London in about 1668. Amongst his vast number of discoveries were bacteria, sperm, blood cells and a myriad of protozoa. He also laid the foundations of plant anatomy. His discoveries were reported to the Royal Society in a series of famous letters. Van Leeuwenhoek made hundreds of microscopes over the years and many people copied them, including Hooke himself. Nine of van Leeuwenhoek¡¯s original microscopes still exist today.

Hooke confirmed Van Leeuwenhoek's work and one of the important discoveries he made with his own compound microscopes was that of the cell. He examined the structure of cork. At that time cork was a very valuable commodity for the English ship building industry. He found that cork was made up tiny chambers that he called cells, coining the term to describe what we know today as the building block of all animal and plant life.

Minor mechanical and optical improvements were made to compound microscopes over the years, but no major improvements were made until the 19th century. In 1847 Carl Zeiss started making simple microscopes in Jena, Germany. By 1857 he was producing a compound microscope, the Stand I. The business grew and in 1872 Ernst Abbe joined the firm. Abbe worked on optical design and this led to the discovery of many basic facts about optics and lens design. After Otto Schott, an optical glass expert, joined the firm in 1886 the lenses produced by Zeiss soon became the best in the world. Apochromatic, Planapochromatic and Immersion lenses originated in the Zeiss laboratories. Compound microscopes were soon being made all over the world and Germany, Great Britain and the USA led the market. Hundreds of different designs of microscope appeared, especially in the USA and Great Britain and in such a short article it is impossible to deal with them all.

There have been great advances made over the last 70 years and firms such as Zeiss, AO Spencer, Vickers, Leitz, Wild, Reichert, Nikon and Olympus and many others have produced a vast selection of different kinds of light microscope. Some of these will be described in the other sections.

The Electron Microscope was invented by Ruska in 1933 and the first commercial instruments came from the Siemens factory in Berlin in about 1937. An Electron Microscope which employs a focused beam of electrons instead of light to image the specimen is capable of far greater magnification and resolution than a light microscope. Resolution in the Light Microscope is limited by the wavelength of the light used and is usually about 250 nanometers, or millionths of a millimeter. The wavelength of the electron is far shorter and resolutions of 0.3nm are routinely possible at magnifications that go to 1 000 000X. Later the Scanning Electron Microscope was developed and in 1980 the Scanning Tunneling Microscope and variations. These will all also be discussed in later sections.
Article Source:
http://www.microscopehelp.com/thehistoryofthemicroscope.html

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Types of microscopes
There are several types of microscopes available on the market, selection of the proper type is not a simple assignmen as you would need to determine what exactly it would be used for. Below you can see all the types of modern microscopes for any scientific and hobby task.

A compound microscope is an optical device made for magnifying objects, microscopeconsists of a number of lenses forming the image by the lens or a combination of lenses positioned near the object, projecting it to the ocular lens / lenses or eyepieces. The compound microscope is the most used type of a microscope.
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microscope
An optical microscope, also called "light microscope", is a type of a compound microscope that uses a combination of lenses magnifying the images of small objects. Optical microscopes are the oldest type and simplest to use and manufacture.

A digital microscope has a digital CCD camera attached to it and connectedmicroscope to a LCD or a computer monitor. A digital microscope usually has no eyepieces to view the objects directly. The trinocular type of digital microscopes have the possibility of mounting the camera, that would be an USB microscope.

A fluorescence microscope or "epifluorescent microscope" is a special type of a light microscope, instead of light reflection and absorption used fluorescence and phosphorescencea to view the samples and their properties.

An electron microscope is one of the most advanced and important types of microscopes with the highest magnifying capacity. In electron microscopes electrons are used to illuminate the tiniest particles. Electron microscope is a much more powerful tool in comparison to commonly used light microscopes.

A stereo microscope, also referred to as "dissecting microscope", uses two objectives and two eyepieces which makes it possible to view a specimen under angles to the human eyes forming a stereo 3D optical vision.

Most compound types of light microscopes consist of the following parts: Eyepiece Lens, Arm, Base, Illuminator, Stage, Revolving Nosepiece, Objective Lenses, Condenser Lens. Details on microscope parts.

Microscope camera is a digital type of a video capturing device mounted on light microscopes and equipped with USB or AV cable. Digital microscope cameras are usually good with trinocular microscopes.

A few words for the beginners
The most important feature of a microscope is of course to give a larger image, and the increased image is probably the determining factor of this device. A very important parameter of optics is "aperture". We will not bore you with the formulas, in simple words - the more the aperture is, the stronger the lens refract light rays and the more of those rays pass through the lens.
A simple glass lens (the "dry", as experts say) can reach the aperture value of 0.95. If you get close to 0.65, the lens can be classified as a high aperture lens. But really high values of aperture can be achieved by immersion lenses, which, unlike the "dry" ones, contain a so-called immersion liquid. The liquid improves the optical parameters (the aperture can reach the values of 1.40)

In addition, in order to achieve quality, and above all see clear images, it is very important to have a high resolution microscope. It is required not only eliminating the distortions associated with inaccuracies in the lenses, but somehow compensating the dispersion of light, ie expansion of the "white" spectrum of seven colors of the rainbow, arises due to unequal refraction in the glass of different light waves. Achromatic lenses are used for this purpose, they only slightly distort the color. The "image" in the microscope with achromatic lens accurately conveys the colors of the viewed object.

And finally, last but not least, an absolutely necessary part of a microscope is a source of light. The simplest source would be a mirror, which directs light to the object being studied, the more advanced types of microscopes use a special bulb with predetermined parameters of the spectrum and brightness.

Article Source:
http://www.under-microscope.com/

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The Virtual Microscope
The Virtual Microscope is a NASA-funded project that provides simulated scientific instrumentation for students and researchers worldwide as part of NASA's Virtual Laboratory initiative. This site serves as home base for the Imaging Technology Group's contributions to that project¡ªnamely virtual microscopes and the multi-dimensional, high-resolution image datasets they view. Currently we provide 90 samples totaling over 62 gigapixels of image data. The Virtual Microscope, which is available for free download supports functionality from electron, light, and scanning probe microscopes, datasets for these instruments, training materials to learn more about microscopy, and other related tools. The project is open source and the code is available on Sourceforge.

Our Virtual Instruments
Our virtual instrument code currently supports data from three different instruments in our Microscopy Suite: a Philips Environmental Scanning Electron Microscope (ESEM), a Fluorescence Light Microscope, and an Atomic Force Microscope. We have also adapted a high-resolution Digital SLR with a 5x magnifying macro lens to capture some specimens, as well as included some artistic renderings of microscopy data.

The virtual microscope aims to present the user with a method for exploring these pre-captured image data as if they were using the real instrument in real-time. To fulfill this goal, the virtual microscope provides the ability to load/unload specimens, to navigate to any point on that specimen, to change magnification, to adjust image parameters (contrast and brightness), to change focus, to analyze elemental composition, to measure features, and to render data in three dimensions. Additionally, the interface allows experts and laypeople alike to annotate specimens and/or load previously-created annotations.

Beyond the user interface, we have written a backend suite of custom software for the various tasks involved in collecting and processing the image data. This includes automated data collection of the thousands of images it takes to describe a single specimen, and routines for stitching and blending those tiled image datasets.

Microscope Training
As part of our educational mission, we have produced animations that teach the basics of electron, light, and scanning probe microscopy, videos detailing sample preparation for those instruments, videos of interviews with graduate students about their career paths in the sciences, and help videos about how to use our application. These materials animations use a multitude of media to explore various topics relevant to the theory and craft behind the images.
Article Source:
http://virtual.itg.uiuc.edu/

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What are microscope parts and functions?
Eyepiece: The eyepiece (sometimes called the 'ocular') is the lens of the microscope closest to the eye that you look through. It is half of the magnification equation (eyepiece power multiplied by objective power equals magnification), and magnifies the image made by the objective lens... sometimes called the virtual image. Eyepieces come in many different powers. One can identify which power any given eyepiece is by the inscription on the eyecup of the lens, such as "5x", "10x", or "15X". Oculars are also designed with different angles of view; the most common is the wide field (W.F.).

Eyepiece Holder: This simply connects the eyepiece to the microscope body, usually with a set-screw to allow the user to easily change the eyepiece to vary magnifying power.

Body: The main structural support of the microscope which connects the lens apparatus to the base.

Nose Piece: This connects the objective lens to the microscope body. With a turret, or rotating nose piece as many as five objectives can be attached to create different powers of magnification when rotated into position and used with the existing eyepiece.

Objective: The lens closest to the object being viewed which creates a magnified image in an area called the "primary image plane". This is the other half of the microscope magnification equation (eyepiece power times objective power equals magnification). Objective lenses have many designs and qualities which differ with each manufacturer. Usually inscribed on the barrel of the objective lens is the magnification power and the numerical aperture (a measure of the limit of resolution of the lens).

Focusing Mechanism: Adjustment knobs to allow coarse or fine (hundredths of a millimeter) variations in the focusing of the stage or objective lens of the microscope.

Stage: The platform on which the prepared slide or object to be viewed is placed. A slide is usually held in place by spring-loaded metal stage clips. More sophisticated high-powered microscopes have mechanical stages which allow the viewer to smoothly move the stage along the X (horizontal path) and Y (vertical path) axis. A mechanical stage is a must for high-power observing.

Illumination Source: The means employed to light the object to be viewed. The simplest is the illuminating mirror which reflects an ambient light source to light the object. Many microscopes have an electrical light source for easier and more consistent lighting. Generally electrical light sources are either tungsten or fluorescent, the fluorescent being preferred because it operates at a cooler temperature. Most microscopes illuminate from underneath, through the object, to the objective lens. On the other hand, stereo microscopes use both top and bottom illumination.

Base: The bottom or stand upon which the entire microscope rests or is connected.
Article Source:
http://wiki.answers.com/Q/What_are_microscope_parts_and_functions

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Microscope's Steps
A sequence of steps to take
There is a clear sequence of steps to take to achieve perfect viewing. These are detailed in the box below. A word of warning: Take care when adjusting the focus knobs that you do not advance the objective lens onto the slide! It is very easy to break the slide and possibly damage the objective.

When setting up the focus it is best to view from the side and lower the objective so that it is nearly, but not, touching the slide. Now adjustments can be made while viewing through the eye-piece and slowly winding the objective UP and AWAY from the slide - this way you avoid any potential damage to either the slide or microscope.

Getting things in focus
Once the specimen is in focus, fine adjustments in illumination and iris aperture can be made to improve viewing.

The slide should be scanned systematically, usually by finding the top corner of the cover glass and then moving the slide slowly across the stage to the adjacent corner. When the opposite side is reached the slide is moved up until a new field of view is visible and then moved slowly across to the other side. This is repeated until the bottom of the slide is reached.

Higher magnification are obtained by rotating the nosepiece turret and selecting another objective and then re-focusing.

Parasites are often transparent
Since many parasites are transparent to light it is often necessary to use various techniques to highlight them. The two most popular methods are phase contrast and darkfield. Both of these methods are outside the scope of these pages, but essentially they manipulate the light so that transparent objects are more readily visible. These specialist methods usually mean adding special condensers of objectives to your microscope. While these methods are useful they are not essential for fish disease diagnosis.

If there is a problem with viewing any specimens with an ordinary brightfield microscope it is possible to increase the contrast by racking down the condenser or closing up the iris aperture, although it does reduce resolution.

Scheme for setting up a simple monocular microscope
Make sure the 10x eyepiece is in place at the top of the draw tube
Raise the body tube a few inches above the stage - by looking from the side and turning the course focus knob
Rotate the nosepiece and click the lowest power objective into place above the stage (usually a 10x)
Adjust the illumination if using a mirror, turning the flat side of the mirror towards the light source so that light is reflected up towards the condenser
Rack the condenser up to within 2mm below the stage and adjust the iris diaphragm until it is half open
Place the specimen on the stage making sure that the cover glass is uppermost and secure it with either the stage clips or the mechanical stage arms
Adjust the angle of the mirror so that a spot of light appears on the slide directly below the objective lens
Looking from the side and using the course control knob, lower the objective until it is just above the slide
Look through the eyepiece. Adjust the mirror to give an even amount of illumination
Use the course control knob to slowly rack the objective upwards and look through the eyepiece until the specimen is in focus. (Tip) it is sometimes easier to focus on the edge of the cover slip to start with as this gives a nice clean edge when in focus - whereas mucus can sometimes be difficult "to find"
Use the fine focus to obtain the sharpest possible image
If the light is too bright either use a bulb with a lower wattage (if using a table lamp to illuminate the mirror) or adjust the iris diaphragm to reduce glare
Focus the light source onto the slide by slowly racking down the condenser - watch that this does not affect the mirror angle. Adjust the condenser and iris diaphragm to give optimum illumination. Ideally, once the condenser is set in the optimum position, there shouldn't be any need to keep altering it.
While this long list may seem daunting, it is because I have tried to cover every step. You will also note that much of it revolves around optimizing the light source if it is mirror based. With a fixed light source many of these steps can be ignored. After you have set up the microscope a few times it should become second nature.
Article Source:
http://www.fishdoc.co.uk/microscope/micro03.htm

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Electron Microscopy
What are Electron Microscopes?
Electron Microscopes are scientific instruments that use a beam of highly energetic electrons to examine objects on a very fine scale. This examination can yield the following information:
Topography
The surface features of an object or "how it looks", its texture; direct relation between these features and materials properties (hardness, reflectivity...etc.)
Morphology
The shape and size of the particles making up the object; direct relation between these structures and materials properties (ductility, strength, reactivity...etc.)
Composition
The elements and compounds that the object is composed of and the relative amounts of them; direct relationship between composition and materials properties (melting point, reactivity, hardness...etc.)
Crystallographic Information
How the atoms are arranged in the object; direct relation between these arrangements and materials properties (conductivity, electrical properties, strength...etc.)

Where did Electron Microscopes Come From?
Electron Microscopes were developed due to the limitations of Light Microscopes which are limited by the physics of light to 500x or 1000x magnification and a resolution of 0.2 micrometers. In the early 1930's this theoretical limit had been reached and there was a scientific desire to see the fine details of the interior structures of organic cells (nucleus, mitochondria...etc.). This required 10,000x plus magnification which was just not possible using Light Microscopes.
The Transmission Electron Microscope (TEM) was the first type of Electron Microscope to be developed and is patterned exactly on the Light Transmission Microscope except that a focused beam of electrons is used instead of light to "see through" the specimen. It was developed by Max Knoll and Ernst Ruska in Germany in 1931.
The first Scanning Electron Microscope (SEM) debuted in 1942 with the first commercial instruments around 1965. Its late development was due to the electronics involved in "scanning" the beam of electrons across the sample. An excellent article was just published in Scanning detailing the history of SEMs and I would encourage those interested to read it.

How do Electron Microscopes Work?
Electron Microscopes(EMs) function exactly as their optical counterparts except that they use a focused beam of electrons instead of light to "image" the specimen and gain information as to its structure and composition.
The basic steps involved in all EMs:
A stream of electrons is formed (by the Electron Source) and accelerated toward the specimen using a positive electrical potential
This stream is confined and focused using metal apertures and magnetic lenses into a thin, focused, monochromatic beam.
This beam is focused onto the sample using a magnetic lens
Interactions occur inside the irradiated sample, affecting the electron beam
These interactions and effects are detected and transformed into an image
The above steps are carried out in all EMs regardless of type.
Article Source:
http://www.unl.edu/CMRAcfem/em.htm

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World's most powerful microscope starts work
The world¡¯s most powerful microscope is now peering away at tiny things at the University of Texas at San Antonio.

You may be proud of the zoom on your camera, but the JEOL transmission electron microscope, JEM-ARM200F, can magnify by 20 million times.

Its developers hope it will accelerate the development of new cancer therapies and disease treatments.

"We now have access to resolutions that will give us a tremendous scientific advantage to solve problems that need to be attacked," says Miguel Yacaman, chair of UTSA's College of Sciences¡¯ Department of Physics and Astronomy.

"We¡¯ll be able to watch nanoparticles behave one atom at a time. This is the Holy Grail for us."

The microscope will be housed in a specially-designed laboratory that protects it from vibrations.

Yacaman¡¯s team is already using the microscope to study how to develop optimally shaped nanoparticles that could be used with a laser to pinpoint and destroy cancerous cells.

The university is also using it to study Alzheimer¡¯s disease. The microscope will eventually be accessible to researchers around the world, operating 24 hours a day, seven days a week.
Article Source:
http://www.tgdaily.com/general-sciences-features/50162-worlds-most-powerful-microscope-starts-work

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Friendly Link Timeline of the Microscope Microscope Terms Cleaning your microscope Evaluating a Microscope History of the Microscope How to use a microscope Different types of microscopes How to Adjust a Microscope Microscope FAQ's Microscope Maintenance Microscope Parts & Function Choosing A Microscope