Related Experiment Video
Updated: Dec 27, 2025
09:02
Rapid PCR Thermocycling using Microscale Thermal Convection
Published on: March 5, 2011
23.2K
Precooling Strategy Allows Exponentially Faster Heating
1Department of Physics of Complex Systems, Weizmann Institute of Science, 76100 Rehovot, Israel.
Physical Review Letters
|February 29, 2020
Summary
Heating systems faster is possible using a surprising precooling strategy. This method, demonstrated on the 2D Ising model, significantly shortens heating times in many-body systems.
Area of Science:
- Thermodynamics
- Statistical Mechanics
- Quantum Control
Background:
- Heating systems efficiently is crucial in many scientific and engineering applications.
- Conventional heating protocols often rely on maximum temperature differences, which may not be optimal.
- Exploring novel heating strategies can lead to significant time savings.
Purpose of the Study:
- To investigate optimal heating protocols for systems coupled to a temperature-controlled environment.
- To demonstrate that faster heating can be achieved through non-intuitive methods.
- To develop a generalizable method for finding such protocols in complex systems.
Main Methods:
- Development of a projection-based method for discovering optimal control protocols.
- Application of the method to find heating protocols for many-body systems.
- Numerical simulation and analysis of the 2D antiferromagnetic Ising model.
Main Results:
- Identified heating protocols that achieve exponential speedups compared to conventional methods.
- Demonstrated that incorporating a precooling phase can drastically reduce overall heating time.
- Successfully applied the projection-based method to a large-scale 2D Ising model.
Conclusions:
- Optimal heating protocols can be counter-intuitive, often involving a precooling stage.
- The developed projection-based method is effective for finding fast heating protocols in complex many-body systems.
- This approach offers significant potential for time-efficiency in thermal management and control applications.
More Related Videos
Related Concept Videos
01:25Accelerated Curing of Concrete
390
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
390
02:44Heating and Cooling Curves
26.3K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
26.3K
01:20Hot Weather Concreting
251
Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
251
01:27Cold Weather Concreting
279
When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
To counteract the negative impacts of cold weather, ensuring...
279
01:19Mechanism of heat transfer
1.7K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.7K
01:14Mechanisms of Heat Transfer
1.5K
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
1.5K