Abstract: A device for fabricating a quartz microfluidic chip by a femtosecond pulse cluster. The device includes: a femtosecond pulse cluster laser source configured to output a femtosecond pulse cluster; a beam splitting and interference system, configured to split the femtosecond pulse cluster into a plurality of parts, and to converge split parts to form a femtosecond pulse cluster plasma or a femtosecond pulse cluster plasma grating; a sample system configured to move the electronic displacement platform where a quartz glass is placed to control a position where the parts of the femtosecond pulse cluster are converged on the quartz glass; and a hydrofluoric acid immersion system configured to immerse the quartz glass in a diluent hydrofluoric acid solution to remove an ablated part of the quartz glass to form the quartz microfluidic chip.

Abstract: A hyperspectral imaging method includes: providing time-domain synchronous mid-infrared ultrashort pulse and near-infrared ultrashort pulse as pump light and signal light, respectively; subjecting the signal light to optical time-stretching to broaden a pulse width of the signal light; directing the time-stretched signal light to a target sample to be detected; directing the pump light to a time delayer to adjust the time when the pump light reaches a silicon-based camera; spatially combining the time-stretched signal light from the target sample with the pump light from the time delayer; directing combined light to a silicon-based camera where the signal light is detected through non-degenerate two-photon absorption of the signal light under the action of the pump light to acquire hyperspectral imaging data; and obtaining an image of the target sample based on the hyperspectral imaging data.

Abstract: A glass fiber filter element for visible light photocatalysis and air purification and a method for preparing the same. The glass fiber filter element includes 4 to 7 wt % of nanoparticles including at least one selected from zinc oxide, graphene oxide, titanium oxide, and reduced graphene oxide, 2 to 7 wt % of silver nanowires, 3 to 12 wt % of an adhesive system, and 78 to 91 wt % of a glass fiber mat, based on the total weight of the glass fiber filter element. The glass fiber mat is made of at least two glass fibers with different diameters, and the diameters are in a range of 0.15 to 3.5 ?m. The nanoparticles have a particle size from 1 to 200 nm, and the silver nanowires have a diameter of 15 to 50 nm.

Abstract: A fully homomorphic encryption method based on modular operation, the method including: acquiring a plaintext of any numerical value data type in an encryption process and converting the plaintext to a corresponding plaintext system plaintext according to an encryption requirement; performing an encryption operation on each number in the system plaintext, and combining ciphertexts acquired by the encryption operation to obtain a corresponding ciphertext combination; performing a ciphertext operation on the ciphertext combination using a ciphertext source code, a ciphertext radix-minus-one complement, and a ciphertext complement code based on modular encryption; and using modular division to decrypt a result of the ciphertext operation to obtain a decrypted plaintext.

Abstract: A fully homomorphic encrypted ciphertext query method, the method including: acquiring a first plaintext, encrypting the first plaintext using a symmetric-key algorithm or a public-key algorithm to yield a first ciphertext, and storing the first ciphertext as a queried object; receiving a second plaintext which corresponds to a query condition, encrypting the second plaintext using a symmetric-key algorithm or a public-key algorithm to yield a second ciphertext, and storing the second ciphertext as a query object; performing bitwise summation on the queried object and the query object, to acquire a ciphertext query result; and decrypting the ciphertext query result to yield a decrypted plaintext, and comparing the decrypted plaintext with the second plaintext, determining, if the decrypted plaintext is the same as the second plaintext, the ciphertext query result is correct, and the query object exists in the queried object; otherwise, determining the ciphertext query result is incorrect.

Abstract: A fully homomorphic encrypted ciphertext query method, the method including: acquiring a first plaintext, encrypting the first plaintext using a symmetric-key algorithm or a public-key algorithm to yield a first ciphertext, and storing the first ciphertext as a queried object; receiving a second plaintext which corresponds to a query condition, encrypting the second plaintext using a symmetric-key algorithm or a public-key algorithm to yield a second ciphertext, and storing the second ciphertext as a query object; performing bitwise summation on the queried object and the query object, to acquire a ciphertext query result; and decrypting the ciphertext query result to yield a decrypted plaintext, and comparing the decrypted plaintext with the second plaintext, determining, if the decrypted plaintext is the same as the second plaintext, the ciphertext query result is correct, and the query object exists in the queried object; otherwise, determining the ciphertext query result is incorrect.

Abstract: A fully homomorphic encryption method based on modular operation, the method including: acquiring a plaintext of any numerical value data type in an encryption process and converting the plaintext to a corresponding plaintext system plaintext according to an encryption requirement; performing an encryption operation on each number in the system plaintext, and combining ciphertexts acquired by the encryption operation to obtain a corresponding ciphertext combination; performing a ciphertext operation on the ciphertext combination using a ciphertext source code, a ciphertext radix-minus-one complement, and a ciphertext complement code based on modular encryption; and using modular division to decrypt a result of the ciphertext operation to obtain a decrypted plaintext.