The micron-sized hollow silver spheres were obtained by removing the molecular sieve template. Formaldehyde was selected as a reducing agent to reduce +, resulting in the formation of a micron-sized silver shell on the surface of the 4â€‰Ã… molecular sieves. + was absorbed as the precursor on the surface of the molecular sieve. 4â€‰Ã… molecular sieves were employed as a removable solid template.

$sieve of eratosthenes directions$

Excitations of the testbed hardware that will mimic the flight hardware were recommended, as were those that will improve the efficiency of the sieving process.įacile Synthesis of Micron-Sized Hollow Silver Spheres as Substrates for Surface-Enhanced Raman Scatteringĭirectory of Open Access Journals (Sweden)įull Text Available A well-designed type of micron-sized hollow silver sphere was successfully synthesized by a simple hard-template method to be used as substrates for surface-enhanced Raman scattering. The analysis predicts that the performance of the CMTB Thwacker will closely resemble the performance of the Flight Thwacker within the expected steady state operating regime. Finite element models were used to determine the mode shapes of both designs, and comparisons between the natural frequencies and mode shapes were made. The elastodynamic behavior of both sieves was studied analytically using the Rayleigh Ritz method in conjunction with classical plate theory. The sieving behavior of the testbed hardware should be similar to the Flight hardware for the results to be meaningful. The sieve separates particles with a diameter smaller than 150 microns for delivery to onboard science instruments. The CMTB Thwacker hardware operates as a testbed analogue for the Flight Thwacker and Sieve components of CHIMRA, a device on the Curiosity Rover. Comparative Modal Analysis of Sieve Hardware Designs

Sieve of eratosthenes directions