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The violin case

Date: Jan 1, 2010

Author: David Bradley

It won't necessarily be music to the classical purist's ear, but chemists have been instrumental in revealing the secret beneath the varnish on a Stradivari violins, and the secret is: there is no secret.

Read More thumbnail image: The violin case

Prediction of 13C and 15N in plant tissues with near-infrared reflectance spectroscopy

Date: Dec 2, 2009

Author:

The appropriateness of near-infrared reflectance spectroscopy for the estimation of stable isotope ratios for nitrogen and carbon of plant tissues has been demonstrated on seven bog species from Patagonia.

Read More thumbnail image: Prediction of 13C and 15N in plant tissues with near-infrared reflectance spectroscopy

Resonant approach to quantum problem

Date: Dec 1, 2009

Author: Steve Down

Microwave waveguides on a diamond-based chip can generate a magnetic field large enough to change the quantum state of an atomic-scale defect in less than one billionth of a second, emulating the process involved in magnetic resonance imaging and potentially leading to a new approach to quantum computing.

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Quick assessment of the thermal decomposition behavior of lignocellulosic biomass by near IR spectroscopy and its statistical analysis

Date: Nov 2, 2009

Author:

The application of near infrared spectroscopy for predicting the thermal decomposition behavior of lignocellulosic biomass (three types of woody biomass and three types of herbaceous biomass) was successfully performed along with statistical analysis.

Read More thumbnail image: Quick assessment of the thermal decomposition behavior of lignocellulosic biomass by near IR spectroscopy and its statistical analysis

NIR and Raman quickly reveal heparin contamination

Date: Nov 1, 2009

Author: David Bradley

Near infrared (NIR) reflectance and laser Raman spectra can be used to quickly screen drug samples non-destructively and to spot contamination. The techniques could not displace nuclear magnetic resonance spectroscopy and electrophoresis required by drug regulators, but could be used as a quick first test for screening potentially contaminated drug products.

Read More thumbnail image: NIR and Raman quickly reveal heparin contamination

Prediction of tablet properties based on near infrared spectra of raw mixed powders by chemometrics: Scale-up factor of blending and tableting processes

Date: Oct 5, 2009

Author:

A method of prediction of tablet properties based on near-IR spectra of raw mixed powders before compression was developed using chemometrical means, allowing for the effect of the difference in scale up using a pilot-scale mixing machine and a continuous tableting machine was studied.

Read More thumbnail image: Prediction of tablet properties based on near infrared spectra of raw mixed powders by chemometrics Scale-up factor of blending and tableting processes

NIR CdSeTe

Date: Oct 1, 2009

Author: David Bradley

A near-infrared-emitting alloy of cadmium, selenium, and tellurium, has been used to make a novel type of quantum dot that is of high-quality, water-soluble, and biocompatible. The quantum dots might have application in the analysis and study of biological systems.

Read More thumbnail image: NIR CdSeTe

Infrared reflection spectrometry analysis as a non-destructive method of characterizing minerals and stone materials in geoarchaeological and archaeometric applications

Date: Sep 7, 2009

Author:

The benefits and applications of using mid and far IR reflection spectrometry (IRS) in the analysis of archaeological materials are illustrated and a new IRS database for more than 250 different archaeological minerals and stone materials is presented.

Read More thumbnail image: Infrared reflection spectrometry analysis as a non-destructive method of characterizing minerals and stone materials in geoarchaeological and archaeometric applications

NIR improvements near

Date: Sep 1, 2009

Author: David Bradley

Spectroscopy, forensic science and even a future generation of quantum communication devices could benefit from research at the National Institute of Standards and Technology (NIST) where a new, highly sensitive, and low-cost approach has been developed for measuring light in the near-infrared range.

Read More thumbnail image: NIR improvements near

Complex biopolymeric systems at stalk/epicuticular wax plant interfaces: A near IR spectroscopy study of sugarcane

Date: Aug 3, 2009

Author:

Naturally occurring macromolecules present at the epicuticular wax/stalk tissue interface of sugarcane were investigated using near IR spectroscopy alone to study water, cellulose, and wax-cellulose interrelationships, where in the past many different techniques have been required.

Read More thumbnail image: Complex biopolymeric systems at stalkepicuticular wax plant interfaces A near IR spectroscopy study of sugarcane
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