Device and method for controllable growth of crystals in a process of freezing
A device for controllable growth of ice crystals inside an organic object during freezing, the device comprising at least one transducer, a control unit, a power supply and a modulator, wherein the control unit causes a plurality of types of magnetic fields to be emitted, by the at least one transducer, in a cyclical manner, and the control unit determines, for each type of magnetic field comprised in the plurality of types of magnetic fields, a carrier frequency, a modulation frequency, modulation boundaries and duty cycle, and sets them by utilizing the signal generator and the power supply; and wherein a strength of the plurality of the types of the magnetic fields is determined by adjusting an output voltage provided by the power supply.
1 . A device for controllable growth of ice crystals inside an organic object during freezing, the device comprising
at least one transducer configured to trigger the growth of the ice crystals by causing mechanical elastic waves within the organic object, a control unit, a power supply and a modulator, wherein
the control unit causes magnetic fields to be emitted, by the at least one transducer, in a cyclical manner, so as to control the growth of the ice crystals, and
the control unit determines a carrier frequency, a modulation frequency, modulation boundaries and duty cycle, and sets them by utilizing the signal generator and the power supply; and
wherein a strength of the magnetic fields is determined by adjusting an output voltage provided by the power supply.
2 . A device according to claim 1 , wherein the magnetic fields is at least one of the following: an alternating bidirectional magnetic field, an alternating unidirectional magnetic field and/or a variable pseudo-rotating magnetic field with pulse width modulation.
3 . A device according to claim 1 , wherein the at least one transducer comprises additional transducers placed into the at least one transducer.
4 . A device according to claim 1 , wherein the device is connected to or comprises a computing apparatus.
5 . A device according to claim 4 , wherein the computing apparatus is caused to execute one or more algorithms for determining fields superposition and/or wherein the computing apparatus further stores data regarding types of signals suitable for different types of organic objects to be frozen.
6 . A device according to claim 1 , wherein at least one transducer has a mobile design to facilitate loading and maintenance.
7 . The device of claim 1 , wherein a temperature of the object is maintained at between 0 and −18° C. during the controllable growth of the ice crystals in the object.
8 . The device of claim 1 , wherein the carrier frequency is in a range of 1 KHz to 12 MHz.
9 . The device of claim 1 , wherein the magnetic fields emitted by the transducer are modulated in an infrasonic frequency range.
10 . The device of claim 1 , further comprising a Faraday cage around the transducer.
11 . The device of claim 1 , wherein the magnetic fields emitted by the transducer are modulated in a frequency range of 0.1 Hz to 80,000 Hz.
12 . The device of claim 1 , wherein the mechanical elastic waves within the organic object are directly caused by the magnetic fields.
13 . The device of claim 1 , wherein the magnetic fields emitted by the transducer are pseudo-rotated by a frequency modulation of a pulse width signal.
14 . The device of claim 1 , wherein the magnetic fields emitted by the transducer are alternating bidirectional magnetic fields.
15 . The device of claim 1 , wherein the magnetic fields emitted by the transducer are alternating unidirectional magnetic fields.
16 . The device of claim 1 , wherein the transducer is a magnetic coil surrounding the object.
17 . A device for growth of ice crystals, comprising
a control unit;
a signal generator;
a transducer configured to surround an organic object and connected to the modulator;
a power supply powering the control unit, the signal generator and the transducer;
the transducer configured to cause mechanical elastic waves within the organic object so as to control a growth of the ice crystals within the organic object,
wherein the mechanical elastic waves are triggered by magnetic fields emitted by the transducer;
wherein the control unit sets a carrier frequency, a modulation frequency and duty cycle of the magnetic fields by utilizing the signal generator; and
wherein an amplitude of the magnetic fields is determined by adjusting an output voltage provided by the power supply.
18 . The device of claim 17 , wherein the signal generator includes a modulator for up-shifting a waveform of the magnetic fields to the carrier frequency.
19 . The device of claim 17 , wherein the transducer is a magnetic coil that is round in cross-section.
20 . The device of claim 17 , wherein the transducer is a magnetic coil that is rectangular in cross-section.
21 . The device of claim 17 , wherein the control unit is configured to create the mechanical elastic waves of equal amplitude inside an entire volume of the organic object in order to control the growth of the ice crystals.