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Nathan S. Lewis

Bio: Nathan S. Lewis is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Semiconductor & Silicon. The author has an hindex of 112, co-authored 720 publications receiving 64808 citations. Previous affiliations of Nathan S. Lewis include Lawrence Berkeley National Laboratory & Massachusetts Institute of Technology.


Papers
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Book ChapterDOI
01 Jan 1990
TL;DR: In this paper, a ring-opening metathesis polymerization of substituted cyclooctatetraenes has been used to synthesize substituted polyacetylenes, where the spacing between the side groups in the polymer allows the polymer to attain a conjugated conformation.
Abstract: Ring-opening metathesis polymerization of substituted cyclooctatetraenes has been used to synthesize substituted polyacetylenes. The spacing between the side groups in the polymer allows the polymer to attain a conjugated conformation, while the twisting of the main chain induced by the substituents renders the polymer soluble. Poly(trimethylsilylcyclooctatetraene) has been used to make Schottky-type solar cells.

2 citations

01 Oct 2007
TL;DR: In the last few years of Dr. Smalley's life, he and I worked together, traveling across our country to deliver a message about a subject that we have come to believe is unequivocally the most important technological problem in the world: our global energy future.
Abstract: I am humbled and honored to be here to tell you about a topic that is dear to everyone’s heart — and vital to the future of our planet. My colleague, Richard Smalley, gave a presentation1 on this topic several years ago, at a similar MRS plenary session. Over the last few years of Dr. Smalley’s life, he and I worked together, traveling across our country to deliver a message about a subject that we — like many others, both scientists and lay people — have come to believe is unequivocally the most important technological problem in the world: our global energy future. That is an incredibly powerful statement, one that during the next hour I hope to ably defend.

1 citations

Patent
16 Jun 2000
TL;DR: Sensores QUIMICOS PARA DETECTAR ANALITICOS EN FLUIDOS as mentioned in this paper COMPRENDEN UN PRIMER Y UN SEGUNDO ELEMENTOS CONDUCTORES (P. EJ., TERMINALES ELECTRICOS) ACOPLADOS Y SEPARADOS POR UNA RESISTENCIAQUIMICAMENTE SENSIBLE QUE PROPORCIONA UN CAMINO ELECTRICO ENTRE LOS ELEMENTO ENTRE los ELEMENTos
Abstract: SENSORES QUIMICOS PARA DETECTAR ANALITICOS EN FLUIDOS QUE COMPRENDEN UN PRIMER Y UN SEGUNDO ELEMENTOS CONDUCTORES (P. EJ., TERMINALES ELECTRICOS) ACOPLADOS Y SEPARADOS POR UNA RESISTENCIA QUIMICAMENTE SENSIBLE QUE PROPORCIONA UN CAMINO ELECTRICO ENTRE LOS ELEMENTOS CONDUCTORES. LA RESISTENCIA COMPRENDE VARIAS ZONAS NO CONDUCTORAS (QUE CONTIENEN UN POLIMERO ORGANICO NO CONDUCTOR) Y CONDUCTORAS (QUE CONTIENEN UN MATERIAL CONDUCTOR) SITUADAS ALTERNATIVAMENTE EN DIRECCION TRANSVERSAL AL CAMINO ELECTRICO. LA RESISTENCIA ORIGINA UNA DIFERENCIA DE RESISTIVIDAD ENTRE LOS ELEMENTOS CONDUCTORES CUANDO ESTAN EN CONTACTO CON UN FLUIDO QUE CONTIENE UNA PRIMERA CONCENTRACION DE UN ANALITICO Y CUANDO ESTAN EN CONTACTO CON UN FLUIDO QUE CONTIENE UNA SEGUNDA CONCENTRACION DEL ANALITICO. SE CONSTRUYEN LAS MATRICES DE SENSORES CON, AL MENOS, DOS SENSORES QUE POSEAN DIFERENTES RESISTENCIAS QUIMICAMENTE SENSIBLES QUE DEN LUGAR A DIFERENCIAS EN RESISTENCIA. LA VARIACION EN LA SENSIBILIDAD QUIMICA DE UN SENSOR AOTRO SE CONSIGUE VARIANDO CUALITATIVA O CUANTITATIVAMENTE LA COMPOSICION DE LAS ZONAS CONDUCTORAS Y/O NO CONDUCTORAS. SE PUEDE CONSTRUIR UNA SONDA ELECTRICA PARA DETECTAR UN ANALITICO EN UN FLUIDO UTILIZANDO ESTAS MATRICES EN UNION CON UN DISPOSITIVO DE MEDIDA ELECTRICO CONECTADO ELECTRICAMENTE A LOS ELEMENTOS CONDUCTORES DE CADA SENSOR.

1 citations

01 Apr 2013
TL;DR: The Joint Center for Artificial Photosynthesis (JCAP) focuses on an alternative approach that aims to produce chem. fuels from sunlight, water, and carbon-dioxide using an engineered, non-biol. device that is cost-effective, robust, and efficient.
Abstract: Addressing the world's energy challenges will require cost-competitive, globally scalable technologies for fuel prodn. that minimize impact on the environment. Despite decades of research focused on understanding and improving the efficiencies of natural photosynthesis, the energy conversion efficiencies of the most productive biofuel crops remain too low for mass industrialization of bioenergy. The Joint Center for Artificial Photosynthesis (JCAP) focuses on an alternative approach that aims to produce chem. fuels from sunlight, water, and carbon-dioxide using an engineered, non-biol. device that is cost-effective, robust, and efficient. Research at JCAP involves the development of core technologies for artificial solar-fuels generation, including directed and combinatorial methods for the discovery of light-absorbing, semiconductor-based materials and watersplitting and carbon dioxide reducing catalysts, the design of ion-permeable, gas-sepg. membranes, and methods for efficiently integrating and assembling these components into fully functional prototypes. Recent discoveries in JCAP have led to significant advances towards com. viable, solar-fuel producing systems.

1 citations


Cited by
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Journal ArticleDOI

[...]

08 Dec 2001-BMJ
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

33,785 citations

Journal ArticleDOI
24 Oct 1991-Nature
TL;DR: In this article, the authors describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency.
Abstract: THE large-scale use of photovoltaic devices for electricity generation is prohibitively expensive at present: generation from existing commercial devices costs about ten times more than conventional methods1. Here we describe a photovoltaic cell, created from low-to medium-purity materials through low-cost processes, which exhibits a commercially realistic energy-conversion efficiency. The device is based on a 10-µm-thick, optically transparent film of titanium dioxide particles a few nanometres in size, coated with a monolayer of a charge-transfer dye to sensitize the film for light harvesting. Because of the high surface area of the semiconductor film and the ideal spectral characteristics of the dye, the device harvests a high proportion of the incident solar energy flux (46%) and shows exceptionally high efficiencies for the conversion of incident photons to electrical current (more than 80%). The overall light-to-electric energy conversion yield is 7.1-7.9% in simulated solar light and 12% in diffuse daylight. The large current densities (greater than 12 mA cm-2) and exceptional stability (sustaining at least five million turnovers without decomposition), as well as the low cost, make practical applications feasible.

26,457 citations

28 Jul 2005
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
Abstract: 抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1(PfPMP1)与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员,通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

18,940 citations

Journal ArticleDOI
TL;DR: This critical review shows the basis of photocatalytic water splitting and experimental points, and surveys heterogeneous photocatalyst materials for water splitting into H2 and O2, and H2 or O2 evolution from an aqueous solution containing a sacrificial reagent.
Abstract: This critical review shows the basis of photocatalytic water splitting and experimental points, and surveys heterogeneous photocatalyst materials for water splitting into H2 and O2, and H2 or O2 evolution from an aqueous solution containing a sacrificial reagent Many oxides consisting of metal cations with d0 and d10 configurations, metal (oxy)sulfide and metal (oxy)nitride photocatalysts have been reported, especially during the latest decade The fruitful photocatalyst library gives important information on factors affecting photocatalytic performances and design of new materials Photocatalytic water splitting and H2 evolution using abundant compounds as electron donors are expected to contribute to construction of a clean and simple system for solar hydrogen production, and a solution of global energy and environmental issues in the future (361 references)

8,850 citations