Holograms need a material to record interference fringes. There are many materials that can record fringes.
'''[[Silver Halide Chemistry]] .''' Theory and Practice of Making Silver Halide Plates and Development. '''[[Silver Film Comparison Chart]] ''' A quick comparison of the qualities of different commercially made films. '''[[Dichromated Gelatin Chemistry]] .''' Theory and Practice of DCG Plates and Development. '''[[Polymer Film and Processes]] '''. Many commercially sold holograms are made from photopolymers. '''[[Photoresist]] '''. Taken from the electronics industry, this material can make relief holograms for embossing. '''[[Coating Methods]] '''. Coating Gelatin on to a glass plate is an art in itself. '''[[Crystals]] '''. There are many crystals that can record an image. The cost and exposure energy required is very high so they are not often used for holography. '''[[Embossed Holograms]] '''. These are like the holograms seen on credit cards. '''[[Gelatin]] '''. Used as the suspension medium to hold light sensitive particles. [http://en.wikipedia.org/wiki/Hologram#Materials Wikipedia's summary of Holographic Recording Materials ][http://en.wikipedia.org/wiki/Periodic_table_%28standard%29 Periodic Chart of the Elements ] '''[[Books]] '''