What is hot stage microscopy?
Hot stage microscopy (HSM) is the coupling of thermal analysis with microscopy for the solid-state characterization of materials as a function of temperature and time.
What is a hot stage microscope used for in forensics examination of glass?
Hot stage microscopy may serve as a valuable tool for the study of the most obvious property i.e. physical features or morphology of a sample under investigation. A wealth of information on how the sample changes when heated can be obtained by HSM studies.
What is the function of stage in microscope?
All microscopes are designed to include a stage where the specimen (usually mounted onto a glass slide) is placed for observation. Stages are often equipped with a mechanical device that holds the specimen slide in place and can smoothly translate the slide back and forth as well as from side to side.
What is DTA curve?
The DTA curve is a curve of temperature difference between the sample material and the reference material versus temperature or time. Applications of DTA include: DTA is widely used in the pharmaceutical and food industries. DTA may be used in cement chemistry, mineralogical research, and environmental studies.
What is meant by thermal analysis?
Thermal analysis is a general term defining a technique used to analyze the time and temperature at which physical changes occur when a substance is heated or cooled. Each technique is defined according to the types of physical changes being analyzed.
What are the two most often used methods of glass analysis?
The flotation and immersion methods are best used to determine a glass fragment’s density and refractive index, respectively.
What are the stages of a microscope?
Stage: The flat platform that supports the slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, the slide is controlled by turning two knobs instead of having to move it manually. One knob moves the slide left and right, the other moves it forward and backward.
What are 4 types of microscopes?
Exploring the Top Four and More. There are several different types of microscopes used in light microscopy, and the four most popular types are Compound, Stereo, Digital and the Pocket or handheld microscopes.
What is TG and DTA?
Thermogravimetry/Differential Thermal Analysis (TG/DTA) TG/DTA is a simultaneous thermal analyzer that can characterize multiple thermal properties of a sample in a single experiment. The TG component measures temperatures where decomposition, reduction or oxidation occurs.
What is difference between DTA and DSC?
Differential thermal analysis (DTA) is suited for the determination of characteristic temperatures, while differential scanning calorimetry (DSC) additionally allows for the determination of caloric values such as the heat of fusion or heat of crystallisation.
What are different types of thermal analysis?
Thermal Analysis Techniques
- THERMOGRAVIMETRIC ANALYSIS (TGA)
- THERMOGRAVIMETRIC ANALYSIS WITH EVOLVED GAS ANALYSIS (TG-EGA)
- DIFFERENTIAL SCANNING CALORIMETRY (DSC)
- THERMOMECHANICAL ANALYSIS (TMA)
- DYNAMIC MECHANICAL ANALYSIS (DMA)
What is hot stage microscopy (HSM)?
Hot stage microscopy (HSM) is the coupling of thermal analysis with microscopy for the solid-state characterization of materials as a function of temperature and time.
What are the components of a hot stage microscope?
A typical modern hot stage microscope consists of a computer controlled programmable hot stage, an optical microscope for real time observation, polarizing filters, digital camera for recording thermal events, computer and software to control the hot stage and to carry out the analysis of the thermographs generated during a thermal event (Fig. 1 ).
What are the applications of the hot stage?
The hot stage can also be used to study polymorphic transformations, phase changes, sublimation, purity, recrystallization, waters of hydration, decomposition, or other thermal processes.
When was the first hot stage microscope invented?
The first modern hot stage microscope was introduced by Mettler in 1967 which rapidly gained popularity because of its ease of use and precision (McCrone et al. 1984; Vitez et al. 1998 ).