King Abdullah University of Science and Technology

Saudi Arabian Oil Company

Ulrich Buttner

Khaled Nabil Salama

Kalaivanan Loganathan

Thomas D Anthopoulos

Hendrik Andreas Faber

Emre Yengel

Mario Blanco

Sumeyra Agambayev

Khaled Hamdan Almuhammadi

Gilles Henri Fernand Lubineau

Yousof Mashraei

Marco Francesco Alfano

A method for manufacturing a soft stamp includes providing a substrate having a first electrode and a second electrode, the second electrode being formed at a distance less than 100 nm from the first electrode so that a nanogap Ng is formed between the first and second electrodes; pouring a curable substance over the first and second electrodes and into the nanogap Ng; curing the curable substance to form a soft stamp; and removing the soft stamp from the first and second electrodes. The soft stamp has a nano-feature having a size less than 100 nm.

Methods for producing nanoscale patterns, nano-fluidic devices, and nanogap electrochemical devices

Microfluidics has advanced in terms of designs and structures, however, fabrication methods are either time consuming or expensive to produce, in terms of the facilities and equipment needed. A fast and economically viable method is provided to allow, for example, research groups to have access to microfluidic fabrication. Unlike most fabrication methods, a method is provided to fabricate a microfluidic device in one step. In an embodiment, a resolution of 50 micrometers was achieved by using maskless high-resolution digital light projection (MDLP). Bonding and channel fabrication of complex or simple structures can be rapidly incorporated to fabricate the microfluidic devices.

Methods of making microfluidic devices

Various examples are provided related to the preparation of electrodes on carbon fiber reinforced polymer (CFRP) composites with low contact resistance. Laser-based surface preparation can be used for bonding to CFRP composites. In one example, a method includes preparing a pretreated target area on a CFRP composite surface using laser pulsed irradiation and bonding an electrode to exposed fibers in the pretreated target area. The surface preparation can allow the electrode to have a low contact resistance with the CFRP composite.

Preparation of electrodes on CFRP composites with low contact resistance comprising laser-based surface pre-treatment

Process for enhanced metal recovery from, for example, metal-containing feedstock using liquid and/or supercritical fluid carbon dioxide and a source of oxidation. The oxidation agent can be free of complexing agent. The metal-containing feedstock can be a mineral such as a refractory mineral. The mineral can be an ore with high sulfide content or an ore rich in carbonaceous material. Waste can also be used as the metal-containing feedstock. The metal-containing feedstock can be used which is not subjected to ultrafine grinding. Relatively low temperatures and pressures can be used. The metal-containing feedstock can be fed into the reactor at a temperature below the critical temperature of the carbon dioxide, and an exotherm from the oxidation reaction can provide the supercritical temperature. The oxidant can be added to the reactor at a rate to maintain isothermal conditions in the reactor. Minimal amounts of water can be used as an extractive medium.

Enhanced metal recovery through oxidation in liquid and/or supercritical carbon dioxide

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Thuwal, Saudi Arabia

Ulrich Buttner