Skip to main content

Applications for AFM Raman Systems Raman spectroscopy in Arts and Archaeology



AFM-Raman Systems and Raman Spectroscopy has become very popular in a range of different scientific fields within the past 10 years due to advances which have meant that Raman spectroscopy has never been simpler to perform. Advances both in testing times and portability have meant that Raman spectroscopy is now the chief choice of very many scientists in the field of forensics, but there are other industries which have embraced Raman spectroscopy technology throughout their investigative procedures.

 What sort of materials is Raman spectroscopy used on?

The list of applications is indeed broad, due to the fact that Raman spectroscopy can be used to analyse almost everything. Raman spectroscopy is suitable for the analysis of solids, powders, liquids, gels, slurries and gases, and everything in-between. Furthermore, Raman spectroscopy shows promising spectra on inorganic materials such as plastics and polymers as well as organic ones, and can even be used on biological materials such as blood and human tissue, among others.

Raman spectroscopy can be used on pure chemicals, mixtures and solutions in addition, which means that the viability of Raman based spectroscopy is even more valuable.

The only limitation with Raman spectroscopy is that it cannot be used on metals or any forms of alloy, due to the fact that atoms in pure metals do not vibrate and therefore do not give appropriate polarization to influence light wavelength. Therefore, the method of measuring variations in light which are normally required to perform Raman spectroscopy is quite literally impossible.

Which Applications are there for Raman Spectroscopy?

There are a number of tasks which are routinely done today with the aid of Raman spectroscopy. The fields of art and archelogy use Raman Spectroscopy routinely in order to characterise pigments, ceramics and gemstones which are often pieces of artworks or major archaeological finds. Needless to say, the non-destructive nature of Raman spectroscopy as well as the level of detail which can be ascertained of an object is quite simply invaluable.

Measuring the age of an artefact is possible with Raman Spectroscopy. Due to literature and human accounts of dates of infrastructure completion, there is a rough guideline in existence of how certain materials should look. A reference to a period will be ascertained before an artefact is tested for similar characteristics.  Of course, this is performed on an artefact which is the same material as the reference.

Often, proper identification and verification that a piece is indeed an original product is performed using this technique. If a fake is brought into play, as it is being tested, compounds will be identified which quite simply weren’t in existence at that particular point.

Comments

Post a Comment

Popular posts from this blog

What Is Oil and Gas Reservoir Evaluation?

Oil and Gas Reserves and Resources Evaluation is a series of technical studies which are intended to add value to an oil and gas company’s operations pertaining to a particular prospect – as well as highlight issues which may prevent the prospect coming into fruition. Typically, an oil and gas reserves and resource evaluation consists of various technical studies, which tend to take place from an early exploration stage, onward to development planning and even utilised in project execution. Some of these technical studies are as follows. Seismic Processing and Imaging is taken on both pre and post stack processing sequences. Furthermore, there are a series of regional sedimentlogical, sequence-stratigraphic and structural exploration technical audits to carry out. Essential geological information such as sedimentology, facies, burial history, diagenesis and mineralogy is also taken into consideration in order to find the best possible evaluation result. All-in-all, the act of o
Post a Comment
Read more

What is AFM-IR?

AFM-IR , or atomic force microscopy based infrared spectroscopy is a form of chemical imaging which creates a visual image of components which make up chemicals, which uses extremely high powered microscopes. This is typically done with a radiation source to illuminate the sample which is being observed, as well as the usage of an AFM probe which detects thermal expansions from the radiation source. Also used is a high-powered imaging system to translate the probe’s movements into an image, and finally a detector array to categorise. AFM-IR places results in a three-dimensional block, which spans x and y dimensions. AFM-IR has enormous application in a whole variety of fields. Whether it is chemistry, biology, medicine, pharmaceutical agricultural or industrial use, the ability to analyse substances and work our properties is vital. AFM-IR has quickly become one of the most powerful and efficient ways to characterise material surfaces, especially at nanoscale resolution. Na
Post a Comment
Read more

What are Electrical Feedthroughs?

Electrical feedthroughs are components which enable the transfer of electrical power into or out of a hermetic chamber. Electrical feedthroughs consist of metal-ceramic-joints whereas the ceramic serves as an electrical insulator between the conductor and the connection flange. In addition to providing leak-tightness in high and ultra-high vacuum, many feedthroughs have to be resistant to high or cryogenic temperatures, high pressure and aggressive chemicals. Coaxial Feedthroughs Coaxial feedthroughs consist of two concentric conductor paths which are electrically isolated from each other by an alumina or glass-ceramic insulator in between. The inner pin-shaped conductor serves as current-carrying contact and is surrounded by a tubular outside conductor, which is usually at ground potential ("grounded shield"). The outer conductor shields the inner conductor from electromagnetic interference effects coming from outside. Coaxial feedthroughs can be used universally and are pa
Post a Comment
Read more