Terahertz wave photonic crystal device with real-time adjustable response frequency band and preparation method and application thereof
A photonic crystal and terahertz wave technology, applied in the field of terahertz wave applications, can solve the problems of stealth material failure, non-adjustable working frequency band, single working frequency band, etc.
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Embodiment 1
[0024] The process of preparing a terahertz photonic crystal device in this embodiment is as follows:
[0025] Step 1: Add 5g of iron powder into 5g of Dow Corning SE1700, and mix evenly to obtain the magnetic ink to be printed.
[0026] Step 2, the ink is loaded into the printer barrel, the pitch of the close-packed structure is set to 500 microns, and the layer height is 150 microns, and the photonic crystal structure is printed according to the three-dimensional wood stack structure array.
[0027] In step 3, the printed photonic crystal three-dimensional array is heated and cured at 100° C. for 1 hour.
[0028] Step 4, conduct a terahertz spectrum test on the heat-treated terahertz photonic crystal stealth device, and obtain the photonic band gap through Fourier transform, and the result is in figure 1 displayed in (no magnetic field).
[0029] Step 5: Modulate the terahertz photonic crystal cloaking device with an external magnetic field, and at the same time perform te...
Embodiment 2
[0031] The process of preparing a terahertz photonic crystal device in this embodiment is as follows:
[0032] Step 1: Add 5g of iron powder into 5g of Dow Corning SE1700, and mix evenly to obtain the magnetic ink to be printed.
[0033] Step 2, the ink is loaded into the printer barrel, the pitch of the close-packed structure is set to 400 microns, and the layer height is 150 microns, and the photonic crystal structure is printed according to the three-dimensional wood stack structure array.
[0034] In step 3, the printed photonic crystal three-dimensional array is heated and cured at 100° C. for 2 hours.
[0035] Step 4, conduct a terahertz spectrum test on the heat-treated terahertz photonic crystal stealth device, and obtain the photonic band gap through Fourier transform, and the result is in figure 2 displayed in (no magnetic field).
[0036] Step 5: Add magnetic field modulation to the terahertz photonic crystal stealth device, and perform terahertz time-domain spec...
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