In response to user interaction, a signal is generated from a control element of a sample diffuser assembly. The sample diffuser assembly comprises a sample container, wherein the sample container is configured to receive a sample to be diffused； a motor operative to assist in diffusing the sample at a selectable transformation rate； a light source, wherein the light source comprises an AC lamp； and control circuitry operatively coupled to the motor and the light source. A set of signals is generated, via the control circuitry in response to the signal generated by the control element, wherein the set of signals simultaneously control the light intensity of the AC lamp based on the transformation rate produced by the motor to diffuse the sample in the sample container.
