Abstract: The invention relates generally to liquid-repellent coatings, and in particular, to porous liquid-repellent coatings, a method of preparing the porous liquid-repellent coatings, and a method of characterizing a porous surface for the liquid-repellent coatings. The invention further relates to a porous liquid-repellent coating comprising a porous layer of a transition metal oxide and/or hydroxide and a layer of a liquid-repellent compound deposited onto the porous layer of the transition metal oxide and/or hydroxide, wherein the porous layer of the transition metal oxide and/or hydroxide is comprised of a plurality of surface pores of varying angles with an average angle that is re-entrant.

Abstract: The invention relates generally to liquid-repellent coatings, and in particular, to porous liquid-repellent coatings, a method of preparing the porous liquid-repellent coatings, and a method of characterizing a porous surface for the liquid-repellent coatings. The invention further relates to a porous liquid-repellent coating comprising a porous layer of a transition metal oxide and/or hydroxide and a layer of a liquid-repellent compound deposited onto the porous layer of the transition metal oxide and/or hydroxide, wherein the porous layer of the transition metal oxide and/or hydroxide is comprised of a plurality of surface pores of varying angles with an average angle that is re-entrant.

Abstract: The invention relates generally to liquid-repellent coatings, and in particular, to porous liquid-repellent coatings, a method of preparing the porous liquid-repellent coatings, and a method of characterizing a porous surface for the liquid-repellent coatings. The invention further relates to a porous liquid-repellent coating comprising a porous layer of a transition metal oxide and/or hydroxide and a layer of a liquid-repellent compound deposited onto the porous layer of the transition metal oxide and/or hydroxide, wherein the porous layer of the transition metal oxide and/or hydroxide is comprised of a plurality of surface pores of varying angles with an average angle that is re-entrant.

Abstract: The invention relates generally to liquid-repellent coatings, and in particular, to porous liquid-repellent coatings, a method of preparing the porous liquid-repellent coatings, and a method of characterizing a porous surface for the liquid-repellent coatings. The invention further relates to a porous liquid-repellent coating comprising a porous layer of a transition metal oxide and/or hydroxide and a layer of a liquid-repellent compound deposited onto the porous layer of the transition metal oxide and/or hydroxide, wherein the porous layer of the transition metal oxide and/or hydroxide is comprised of a plurality of surface pores of varying angles with an average angle that is re-entrant.

Abstract: A deformable body is embossed using a stamp as a function of a pressure distribution. The pressure distribution is obtained by running a deformation model determined based on convolving a contact pressure distribution with a mechanical response of a surface topography of the deformable body and convolving the pressure distribution with a point load response of the stamp.

Abstract: Hot embossing may be more advantageous than other polymer microfabrication processes. An example embodiment of the present invention relates to a method and corresponding apparatus for developing a computationally inexpensive viscoelastic model for the hot embossing of complex patterns. These developed models may help engineers refine their selection of processing parameters based upon successive simulations of the embossing process. The example embodiment models deformation of a deformable body embossed with a stamp as a function of convolving a point-load-time response and a contact pressure distribution. In order to generate the point-load-time response, a time-dependent response of a surface of the thermoplastic to system inputs applied to an elemental region of the surface of the thermoplastic may be employed. The example embodiment generates an estimate of the contact pressure distribution as a function of the point-load-time response and an average pressure applied to the stamp.

Abstract: A deformable body is embossed using a stamp as a function of a pressure distribution. The pressure distribution is obtained by running a deformation model determined based on convolving a contact pressure distribution with a mechanical response of a surface topography of the deformable body and convolving the pressure distribution with a point load response of the stamp.

Abstract: Hot embossing may be more advantageous than other polymer microfabrication processes. An example embodiment of the present invention relates to a method and corresponding apparatus for developing a computationally inexpensive viscoelastic model for the hot embossing of complex patterns. These developed models may help engineers refine their selection of processing parameters based upon successive simulations of the embossing process. The example embodiment models deformation of a deformable body embossed with a stamp as a function of convolving a point-load-time response and a contact pressure distribution. In order to generate the point-load-time response, a time-dependent response of a surface of the thermoplastic to system inputs applied to an elemental region of the surface of the thermoplastic may be employed. The example embodiment generates an estimate of the contact pressure distribution as a function of the point-load-time response and an average pressure applied to the stamp.