A method for magnetic cellular manipulation, the method comprising: contacting a composition with a biological sample to form a mixture, the composition comprising a plurality of particles, each particle in the plurality of particles comprising: a magnetic substrate, the magnetic substrate characterized by a magnetic susceptibility greater than zero; and a chargeable silicon-containing compound comprising 2-(carbomethoxy)ethyltrimethoxysilane, the chargeable silicon-containing compound coating at least a portion of the magnetic substrate; and the biological sample comprising viable sperm cells and damaged or compromised sperm cells, the particles forming complexes with the damaged or compromised sperm cells, and wherein the chargeable silicon-containing compound comprises a first zeta potential charge, the first zeta potential charge being opposite in sign compared to a second zeta potential charge comprised by the damaged or compromised sperm cells in the biological sample; and applying a magnetic field to the mixture to manipulate the composition; and separating the viable sperm cells from the complexes. contacting a composition with a biological sample to form a mixture, the composition comprising a plurality of particles, each particle in the plurality of particles comprising: a magnetic substrate, the magnetic substrate characterized by a magnetic susceptibility greater than zero; and a chargeable silicon-containing compound comprising 2-(carbomethoxy)ethyltrimethoxysilane, the chargeable silicon-containing compound coating at least a portion of the magnetic substrate; and the biological sample comprising viable sperm cells and damaged or compromised sperm cells, the particles forming complexes with the damaged or compromised sperm cells, and wherein the chargeable silicon-containing compound comprises a first zeta potential charge, the first zeta potential charge being opposite in sign compared to a second zeta potential charge comprised by the damaged or compromised sperm cells in the biological sample; and applying a magnetic field to the mixture to manipulate the composition; and separating the viable sperm cells from the complexes. the composition comprising a plurality of particles, each particle in the plurality of particles comprising: a magnetic substrate, the magnetic substrate characterized by a magnetic susceptibility greater than zero; and a chargeable silicon-containing compound comprising 2-(carbomethoxy)ethyltrimethoxysilane, the chargeable silicon-containing compound coating at least a portion of the magnetic substrate; and a magnetic substrate, the magnetic substrate characterized by a magnetic susceptibility greater than zero; and a chargeable silicon-containing compound comprising 2-(carbomethoxy)ethyltrimethoxysilane, the chargeable silicon-containing compound coating at least a portion of the magnetic substrate; and the biological sample comprising viable sperm cells and damaged or compromised sperm cells, the particles forming complexes with the damaged or compromised sperm cells, and wherein the chargeable silicon-containing compound comprises a first zeta potential charge, the first zeta potential charge being opposite in sign compared to a second zeta potential charge comprised by the damaged or compromised sperm cells in the biological sample; and applying a magnetic field to the mixture to manipulate the composition; and separating the viable sperm cells from the complexes.