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Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
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In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

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Mars sample receiving facility or facilities? That is the question.

¹Centre national d'études spatiales (CNES), 2 place Maurice Quentin, 75001 Paris Cedex 01, France.

Life Sciences in Space Research

|December 4, 2019

Summary

Returning samples from Mars is crucial for studying extraterrestrial life and planetary evolution. This requires specialized facilities to ensure sample safety and enable scientific analysis.

Keywords:

Mars sample return Planetary protection Quarantine

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Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Area of Science:

Astrobiology and planetary science, focusing on the search for extraterrestrial life and understanding planetary evolution.

Background:

Mars sample return is a key scientific objective for understanding life's origins and planetary development.
Current missions face stringent "restricted Earth return" protocols from the Committee on Space Research (COSPAR).
Ensuring the safety of returned Martian samples necessitates rigorous containment and preliminary analysis.

Purpose of the Study:

To outline the scientific rationale for establishing dedicated facilities for handling returned Mars samples.
To define the necessity for a minimum of two distinct facilities for sample management and research.
To detail the requirements for preliminary studies and safety certification of extraterrestrial samples.

Main Methods:

The study focuses on the strategic planning and operational requirements for specialized containment facilities.
It involves defining the necessary tests and investigations for sample safety certification.
The approach emphasizes the logistical and safety considerations for Mars sample return missions.

Main Results:

The primary outcome is the justification for building and operating at least two specialized facilities.
These facilities are essential for managing and analyzing samples under strict safety protocols.
The research highlights the critical role of these facilities in enabling scientific breakthroughs.

Conclusions:

Establishing dedicated, secure facilities is paramount for the success of Mars sample return missions.
Two distinct facilities are recommended to manage sample handling, preliminary studies, and safety certification.
These infrastructure developments are vital for advancing astrobiology and planetary science research.