Provided are systems and methods for solvent-free delivery of volatile compounds, where an energy source is used to release the volatile compounds. The systems and methods provided herein have at least one advantage of (1) no solvent (for example water) is required； (2) immediate release of volatile compounds (for example 1-MCP can be released from HAIP within milliseconds or seconds instead of minutes or hours of the existing method using water)； and/or (3) instantly starting and stopping the delivery of the volatile compound.
