A Heating and Cooling Stage With Fast Temporal Control for Biological Applications.

Area of Science:

• Biophysics
• Microscopy
• Physiology

Background:

• Live microscopy requires precise temperature control to maintain organismal physiology.
• Existing temperature control systems may lack versatility for diverse sample geometries and temperature ranges.

Purpose of the Study:

• To design and present a microscope temperature stage utilizing thermoelectric elements.
• To enable temperature control above and below room temperature for live biological samples.

Main Methods:

• A microscope stage design based on thermoelectric elements.
• Simultaneous cooling of the sample insert and objective lens to minimize temperature gradients.
• Adaptable design for various sample geometries.

Main Results:

• The developed stage provides access to a wide temperature range.
• Minimized temperature gradients are achieved, crucial for high-magnification objectives.
• The system effectively supports studies on zebrafish embryo physiology across its thermal tolerance.

Conclusions:

• The thermoelectric microscope stage offers a flexible solution for temperature control in live imaging.
• This technology can benefit research on organisms with non-mammalian physiological temperatures.
• The design enhances the study of organismal physiology under controlled thermal conditions.