function [sample] = initializeSample(sample)
    arguments
        sample.radius (1,1) double {mustBeNumeric, mustBePositive} = 100 % [mm]
        sample.height (1,1) double {mustBeNumeric, mustBePositive} = 300 % [mm]
        sample.mass   (1,1) double {mustBeNumeric, mustBePositive} = 50  % [kg]
        sample.freq   (1,1) double {mustBeNumeric, mustBePositive} = 100 % [Hz]
        sample.offset (1,1) double {mustBeNumeric} = 0                   % [mm]
        sample.color  (1,3) double {mustBeNumeric} = [0.45, 0.45, 0.45]
    end

    %%
    sample.k.x = sample.mass * (2*pi * sample.freq)^2;
    sample.c.x = 0.1*sqrt(sample.k.x*sample.mass);

    sample.k.y = sample.mass * (2*pi * sample.freq)^2;
    sample.c.y = 0.1*sqrt(sample.k.y*sample.mass);

    sample.k.z = sample.mass * (2*pi * sample.freq)^2;
    sample.c.z = 0.1*sqrt(sample.k.z*sample.mass);

    %% Save
    save('./mat/stages.mat', 'sample', '-append');
end