custom_layer = AmorphousLayer(
    MaterialSpecificationsDatabase.MULTILAYER_MATERIALS['Silica'],
    length=10.0*Angstrom,
    melt_temperature=6000*Kelvin,
    melt_time=60*picosecond,
    quench_temperature=1000*Kelvin,
    quench_rate=60*Kelvin/picosecond,
    time_step=0.5*femtosecond,
)