Holograms are being extensively used to reduce counterfeiting of currency, back notes, checks, and product labels. Holographic printers are more expensive and complex than two-dimensional color copiers. Storage media must advance to meet the needs of increasing demand of consumer electronic usages and regulatory requirements for archival information storage and retrieval. Holographic information storage is volumetric by design; it includes encoding and retrieval of data throughout the 3D volume of storage media, not just on its surface. In holographic information storage, a laser beam is split into two rays that intersect in a photosensitive medium. These rays save holographic pictures in the recordable media -- an entire page of data at a time. The recording media is often either an inorganic crystal or a polymer. Among the advantages of polymers is their more sensitivity, so they require less powerful laser beams to encode data. However, polymers can deform when activated by a laser -- which can cause errors. There is unique discussion at a hologram is an interference pattern of related holotech material.
Holotech imaging science may be applied in 3D clinical imaging, incorporating and displaying pictures made by Magnetic Resonance Imaging (MRI) and Computer Tomography (CT). CT and MR form slices of 2D pictures of patients' internal anatomy and other tissue. Biomedical holography can compile these 2D slices into three-dimensional pictures of the appropriate anatomical structures. Such three-dimensional pictures may be used for diagnostic or therapeutic applications. For instance, holographic clinical imaging may be used to form 3D prototypes for implants and bone grafts. Also holographic prototyping has more info.
Holographic technology is starting to be used to expand the range of contact from people to computing systems. Historically, the most common means of interaction from humans to computing systems has been touch through keypad, mouse, handle, or light pen. Holographic technology increases the horizon of human-to-computer touch-based interaction. Machines with holotechnology applied science can project holotechnology keypad pictures in the air and detect when one's fingers cross with those pictures. This makes it possible for tactile interaction to escape the size limitations of a physical device. In the coming years, mobile machines with holotechnology applied science may provide desk-top-size holographic keypads. Holotech applied science may also be used for the emerging field of motion recognition, allowing much more natural human-computer interaction. gesture recognition hardware and software provides additional information on this topic.
We are reaching the physical boundaries of capacity for storage of data as individual bits on media surfaces. With holotechnology storage, information is encoded in optically sensitive material as three- dimensional laser interference configurations. The capacity to save information throughout the detail of data recordable media, not merely on its surface, offers the possibility of orders-of-magnitude more storage capacity than traditional information media. Holotech data storage may offer more quick access quicknesss as well as high storage density. Laser rays do not have inertia like the mechanical reading and writing elements of traditional, spinning media -- so the rays can move quickly to illuminate sequential pages of information. There are challenges, however. One hurdle for holotechnology data storage is that the strength of each page of information stored volumetrically permeating the depth of optically sensitive media decreases when there are too many pages saved in the media. As a source for unique material, see less mechanical inertia with holographic data storage .
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