Phosphors and scintillators for light stimulation within a medium

108:

• A method for modulating biological activity within a medium, comprising:
• introducing a plurality of energy-emitting particles into the medium;
• radiating the plurality of energy-emitting particles in the medium with x-rays generated from a peak applied cathode voltage at or below 80 kVp;
• and
• emitting a first lower energy than the x-ray source to alter the biological activity of the medium.

122:

• A method for light stimulation within a medium, comprising:
• introducing a first plurality of energy-emitting particles into the medium;
• introducing a second plurality of energy-emitting particles into the medium;
• radiating the first and second plurality of energy-emitting particles in the medium with an initiation energy;
• emitting from the first and second plurality of energy-emitting particles a first lower energy than the initiation energy and a second lower energy than the initiation energy to interact with at least one photoactivatable agent in the medium,
• wherein a combination of emission from the first and second plurality of energy-emitting particles producing a spectrum for illumination of the at least one photoactivatable agent in the medium;
• and
• said spectrum having a wavelength distribution simulating at least a part of an absorption spectrum of the at least one photoactivatable agent.

127:

• The method of claim 122, wherein the first and second plurality of energy-emitting particles comprises at least one of:
• phosphor particles;
• ionic doped phosphor particles ;
• single crystal or poly-crystalline powders;
• single crystal or poly-crystalline monoliths;
• fluorescent particles;
• scintillator particles;
• a metallic shell encapsulating at least a fraction of a surface of the particles;
• a semiconductor shell encapsulating at least a fraction of a surface of the particles;
• an insulator shell encapsulating at least a fraction of a surface of the particles;
• and
• quantum dots of a distributed size.

133:

• A method for light stimulation within a medium, comprising:
• introducing a first plurality of light-emitting particles into the medium;
• introducing a second plurality of light-emitting particles into the medium;
• exposing the first plurality of light-emitting particles to an initiating excitation of light energy or particle beam energy to produce from the first plurality of light-emitting particles a first output energy having photocatalysis potential to activate photoactivatable agents in the medium;
• exposing the second plurality of light-emitting particles to an initiating excitation of light energy or particle beam energy to produce from the second plurality of light-emitting particles a second output energy complementary to the first output, wherein a combination of energy emission from the first and second plurality of energy emitting particles produces a combined energy capable of activating chemical agents inside the medium.

137:

• The method of claim 136, wherein:
• the first plurality of light-emitting particles output light energy;
• and
• the second set of particles output chemical energy.