Roentgen (unit) One roentgen deposits of absorbed dose in dry air, or in soft tissue. One roentgen of X-rays may deposit anywhere from in bone depending on the beam energy. This tissue-dependent conversion from kerma to absorbed dose is called the F-factor in radiotherapy contexts. The conversion depends on the ionizing energy of a reference medium, which is ambiguous in the latest NIST definition. The roentgen has its roots in the Villard unit defined in 1908 by the American Roentgen Ray Society as "the quantity of radiation which liberates by ionisation one esu of electricity per cm of air under normal conditions
Gordon Wallace (professor) been focused on exploring the development and use of such materials in biomolecular technologies – he has led a number of initiatives in developing the field of organic bionics. He has developed collaborative research relationships with the inventor of the Cochlear Bionic Ear, Professor Graeme Clark as well as Professor Stephen O'Leary, Professor Peter Choong, and Professor Mark Cook which have led to significant developments in the field of new materials for medical bionics. He has now established a significant national clinic network with others including Professor Chris Baker, Professor Michael Coote, Professor Toby Coates, Professor Gerard Sutton, Professor Stuart