Tag Archives: spectroscopy

Diamond growth using microwave-activated methane/hydrogen plasmas

Diamond is renowned for its many superlative material properties. It defines the top of the Mohs hardness scale, has the highest bulk thermal conductivity at room temperature, and has a very low coefficient of thermal expansion. The

Oriented attachment determines a shape of nanoparticles in gas phase

Until two decades ago, the process of crystallization from a supersaturated solution was assumed to proceed exclusively by molecule-by-molecule addition. However, some recent pioneering theoretical and experimental studies have revealed that crystals can grow by some other,

Forensic differentiation of human and animal hair via ATR FT-IR spectroscopy and chemometrics

The difference between a human hair and an animal hair may not be obvious to the naked eye, until it is scrutinized underneath the microscope or by other means. Although it may be rather easy for a

Growing-up in a stressful environment affects the levels of glutamate in the hippocampus in adult depresses subjects

Mood disorders are emotional disturbances consisting of prolonged periods of excessive sadness, excessive joyousness, or both. Exposure to harsh parenting practices or to maltreatment during childhood can increase individuals’ vulnerability to mood disorders and the severity of

An organic gas instead of inorganic gases for the enhancement of 129Xe magnetic resonance signals through optical pumping

Several new methods have been developed in these two decades in nuclear magnetic resonance (NMR) spectroscopy, which make us accessible to weak signals hitherto unmanageable because of the low sensitivity. Among them, spin-exchange optical pumping (SEOP) can

Probing how alcohol affects the structure of water

Water, despite its ubiquity, is an extraordinarily complex substance. The structure of water on a molecular level is defined by the interactions, “hydrogen bonds”, that individual molecules have with each other. These are the reason that upon

Novel approach to probe interactions between biomolecules

Biological processes involve interactionsof several macromolecules and characterization of such interactions is important for elucidating these processes. The major problem with such characterization is the transient nature of the complexes formed by the interacting molecules. Single molecule

Probing the past with state of the art science

One of the breakthroughs in textile coloration achieved during the 19th century was the development of synthetic dyestuffs and in particular those with the colour purple. Prior to this time purple textiles were expensive and relegated to

Spectroscopic platform to cut time and resources needed to quantify cancer cell biomarker concentrations

Survivability of a living cell, tissue and ultimately a being is influenced by the state of proteolytic degradation of extracellular matrix (ECM) components; if the dynamics of the degradation is perturbed, regulation of many biological processes such

Quantitative enantioselective Raman spectroscopy

A new approach for monitoring the production of chiral substances, e.g. pharmaceutically active ingredients, is proposed. Many biochemical and pharmaceutically active molecules are chiral. This means that two enantiomers exist exhibiting the same chemical structure without being

Searching for magnetic sense inside living cells

Some molecules can absorb light and become excited. These excited molecules are often capable of undergoing chemical reactions that unexcited molecules cannot. Nature makes extensive use of these “photochemical reactions” and uses them to achieve some of

Understanding phosphorus-centered radicals for a sustainably phosphor chemistry

Organo-phosphorus compounds are widely used in different fields of application from the production of pharmaceuticals to other valuable chemicals. A major problem of the use of organo-phosphorus compounds is the production of these compounds starting from the

The thinner, the glassier

Polymers are a key component of our technologies. The diversity of uses and forms of these inexpensive materials is impressive: polymers are present in almost all the aspect of everyday life. Polymers are also intensively studied at

Understanding the evolution of protein dynamics can lead to more effective non-toxic drug therapies

Proteins are macromolecules that play important roles in all living organisms. They protect the body from viruses and bacteria, control chemical reactions, transmit signals between cells and organs, and transport other molecules to places in the body

Are bleached teeth inflamed?

Some tooth-whitening procedures leave the treated teeth painful. The cause of this pain is unknown. To investigate the cause, we wanted to measure the blood flow in the teeth to see if they had become inflamed. Inflammation