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Application Note: Raman Microscopy of Graphene

Graphene is the thinnest material known to exist, whilst also being extremely strong - around 200 times stronger than steel. Graphene is an excellent conductor of electricity and heat as is optically transparent. The applications of graphene are extensive, and include energy storage, photodetectors, and computer chips.


Raman Spectroscopy as a Tool for Studying Polymer Phase Transitions

Semicrystalline polymers are the largest group of commercially produced plastics. Heating and cooling of these polymers between phase transitions is used industrially to shape polymers into their final product. In this application note the RMS1000, with a heated stage, is used to observe phase transitions in two polymers; polyethylene, and nylon-6.


Discrimination of Cooking Oils Using Raman Spectroscopy

Cooking oils are one of the main components of the human diet. Adulteration of extra virgin olive oil with cheaper oils is a common problem in food fraud. This application note highlights how Raman spectroscopy in combination with chemometrics can be used to identify cooking oil adulteration.


Identification of Microplastics Using Raman Spectroscopy

Microplastic pollution is a growing environmental issue. Identification is crucial for assessing their risk to the environment, wildlife, and mankind. Raman microscopy is a great tool for the identification of small microplastics. This application note explores how the RM5 Raman Microscope combined with the KnowItAll Raman database can be used to identify polymers commonly found in the Earths aquatic systems.


Temperature Dependent Triplet States of Benzophenone; Spectral and Lifetime Measurements Utilising Transient Absorption Spectroscopy

In this application note, we demonstrate how transient absorption spectroscopy and temperature-dependent measurements can be employed to investigate and understand the nature of photoexcited triplet states of a molecule.


Optimisation of SERS for Glucose Sensing

Surfaced enhanced Raman scattering (SERS) is an enhancement technique in which nanoparticles are used to provide Raman intensity enhancement. In this application note the optimisation of gold nanoparticles are investigated for the development of a SERS glucose sensor.


Application Note: Measuring Picosecond Fluorescence Lifetimes Using the FLS1000 Equipped with a Hybrid Photodetector

In this application note, the measurement of sub 20 picosecond lifetimes utilising the FLS1000 Photoluminescence Spectrometer equipped with a hybrid photodetector is demonstrated, and the impact that the configuration of the FLS1000 has on the minimum lifetime that can be measured is discussed.


Metal Organic Framework as a Ratiometric Fluorescence Sensor for Hypochlorite and Ascorbic Acid

Researchers in Fujian, China, led by Rong Cao and Zu-Jin Lin, have developed a new method for sensing ClO- employing fluorescence spectroscopy and novel metal organic frameworks. The authors used an Edinburgh Instruments FS5 Spectrofluorometer to characterize and optimise the sensor’s response towards ClO- . They then employed this sensor to detect ascorbic acid, an essential nutrient for the human body.


Emission Tail of Indium Phosphide Quantum Dots Investigated using the FS5 Spectrofluorometer

Semiconductor quantum dots (QDs) have unique tuneable photoluminescence properties which lend them to a range of important technological applications including solid-state lighting, displays, photovoltaics, and biomedical imaging. Indium phosphide (InP) QDs have attracted significant interest as an environmentally friendly and non-toxic alternative to traditional heavy metal based QDs containing cadmium and lead.


Understanding the Light-Harvesting Photosystem II; Utilising Transient Absorption to Study a Molecular Triad’s Photoinduced Electron Transfer Reactions

The ability of plants to live, thrive and survive on sunlight provides unsurpassed motivation to understand and mimic this process for solar energy production. In this application note, Edinburgh Instrument's LP980 Transient Absorption Spectrometer is used to measure energy and electron transfer events.