Thermal Cycler Annealing
Thermal Cycler Annealing - Related Videos
02:30
Gradient Polymerase Chain Reaction to Determine the Optimum Annealing Temperature
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2025
This video demonstrates the gradient polymerase chain reaction for optimization of the annealing temperature of primers, which sets gradient annealing temperature along wells. The effect of different annealing temperatures is determined by the yield of amplified products that helps to optimize the reaction condition.
09:42
Analysis of Thermal Expansion via Dilatometry
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2023
Source: J. Jacob Chavez, Ryan T. Davis, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Thermal expansion is extremely important when considering which materials will be used in systems that experience fluctuations in temperature. A high or low thermal expansion in a material may or may not be desirable, depending on the application. For instance, in a common liquid thermometer, a material with a high thermal expansion would be...
10:32
Thermal Diffusivity and the Laser Flash Method
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2023
Source: Elise S.D. Buki, Danielle N. Beatty, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT The laser flash method (LFA) is a technique used to measure thermal diffusivity, a material specific property. Thermal diffusivity (α) is the ratio of how much heat is conducted relative to how much heat is stored in a material. It is related to thermal conductivity (), how much heat is transferred through a material due to a temperature...
01:27
Thermal expansion and Thermal stress: Problem Solving
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2023
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures? To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
07:16
Thermal Ablation for the Treatment of Abdominal Tumors
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Cited by 19 •
2011
A thermal tumor ablation procedure is described. The entire procedure is detailed, including pretreatment planning and imaging studies, anesthesia, adjuvant techniques to facilitate a percutaneous approach, imaging guidance of the ablation device to the tumor, thermal treatment, post-treatment care and follow-up.
FAQs
Annealing temperature is selected from the primers’ sequence and melting temperature because it governs whether primer-template hybrids remain stable. A suitable setting favors binding to the intended complementary sequence, whereas an unsuitable setting changes the balance between hybrid stability and selective recognition. This directly affects which DNA regions enter subsequent extension.
A temperature that is too high can limit stable primer binding, reducing the amount of product formed. A temperature that is too low can permit less selective binding, increasing nonspecific amplification. Thus, temperature adjustment is a central way to balance amplification yield against the specificity of the targeted DNA product.
Annealing duration, primer concentration, and salt composition can all be adjusted alongside temperature. These variables influence how effectively the intended primer-template hybrids form and how much targeted product accumulates. Considering them together is more informative than changing temperature alone, particularly when amplification shows weak yield or insufficient specificity.
The annealing interval affects how successfully primers interact with complementary template sequences before polymerase extension begins. A suitable duration supports formation of the intended hybrids, while an unsuitable duration can contribute to poor yield or reduced specificity. For this reason, duration should be evaluated together with temperature, primer concentration, and salt composition.
Within each PCR cycle, annealing follows strand separation and precedes DNA polymerase extension. The reaction is cooled after the DNA strands have been separated, giving primers an opportunity to form hybrids before synthesis begins. This sequence connects selective primer binding with production of targeted copies during repeated cycling.
Annealing conditions are reflected in two key outcomes: amplification specificity and product yield. Conditions that favor the intended primer-template interaction help direct copying toward the target, while poorly matched settings can either limit product formation or allow nonspecific binding. Evaluating both outcomes is therefore important when judging whether a PCR setup is effective.
Because it controls the primer-binding stage of PCR, annealing conditions shape the targeted DNA copies available for downstream use. Relevant applications include molecular diagnostics, cloning, genotyping, and DNA sequencing. In each context, controlling temperature and related reaction variables supports the desired balance of specific amplification and sufficient yield.