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Institution

Purdue University

EducationWest Lafayette, Indiana, United States
About: Purdue University is a education organization based out in West Lafayette, Indiana, United States. It is known for research contribution in the topics: Population & Heat transfer. The organization has 73219 authors who have published 163563 publications receiving 5775236 citations. The organization is also known as: Purdue & Purdue-West Lafayette.


Papers
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Journal ArticleDOI
TL;DR: The results establish a baseline for mobility trends in PbSe NC solids, with implications for fabricating high-mobility NC-based optoelectronic devices, and find that carrier mobility is independent of the polydispersity of the NC samples, which can be understood if percolation networks of the larger-diameter, smaller-band-gap NCs carry most of the current in these NCsolids.
Abstract: We measure the room-temperature electron and hole field-effect mobilities (μFE) of a series of alkanedithiol-treated PbSe nanocrystal (NC) films as a function of NC size and the length of the alkane chain. We find that carrier mobilities decrease exponentially with increasing ligand length according to the scaling parameter β = 1.08−1.10 A−1, as expected for hopping transport in granular conductors with alkane tunnel barriers. An electronic coupling energy as large as 8 meV is calculated from the mobility data. Mobilities increase by 1−2 orders of magnitude with increasing NC diameter (up to 0.07 and 0.03 cm2 V−1 s−1 for electrons and holes, respectively); the electron mobility peaks at a NC size of ∼6 nm and then decreases for larger NCs, whereas the hole mobility shows a monotonic increase. The size-mobility trends seem to be driven primarily by the smaller number of hops required for transport through arrays of larger NCs but may also reflect a systematic decrease in the depth of trap states with decre...

671 citations

Proceedings ArticleDOI
12 May 2002
TL;DR: This paper presents a particle swarm optimization algorithm modified by using a dynamic neighborhood strategy, new particle memory updating, and one-dimension optimization to deal with multiple objectives for multiobjective optimization problems.
Abstract: This paper presents a particle swarm optimization (PSO) algorithm for multiobjective optimization problems. PSO is modified by using a dynamic neighborhood strategy, new particle memory updating, and one-dimension optimization to deal with multiple objectives. Several benchmark cases were tested and showed that PSO could efficiently find multiple Pareto optimal solutions.

671 citations

Journal ArticleDOI
TL;DR: A double helix model is proposed that accounts for the sign and magnitude of the optical rotation shift that accompanies the sol-gel transitions and is sterically accessible to each of the various substituted forms.

671 citations

Journal ArticleDOI
TL;DR: This paper considers the adaptive robust control of a class SISO nonlinear systems in a semi-strict feedback form and develops a systematic way to combine the backstepping adaptive control with deterministic robust control.

671 citations

Journal ArticleDOI
27 Jan 2012-Science
TL;DR: The device, which uses two silicon rings 5 micrometers in radius, is passive yet maintains optical nonreciprocity for a broad range of input power levels, and it performs equally well even if the backward input power is higher than the forward input.
Abstract: A passive optical diode effect would be useful for on-chip optical information processing but has been difficult to achieve Using a method based on optical nonlinearity, we demonstrate a forward-backward transmission ratio of up to 28 decibels within telecommunication wavelengths Our device, which uses two silicon rings 5 micrometers in radius, is passive yet maintains optical nonreciprocity for a broad range of input power levels, and it performs equally well even if the backward input power is higher than the forward input The silicon optical diode is ultracompact and is compatible with current complementary metal-oxide semiconductor processing

671 citations


Authors

Showing all 73693 results

NameH-indexPapersCitations
Yi Cui2201015199725
Yi Chen2174342293080
David Miller2032573204840
Hongjie Dai197570182579
Chris Sander178713233287
Richard A. Gibbs172889249708
Richard H. Friend1691182140032
Charles M. Lieber165521132811
Jian-Kang Zhu161550105551
David W. Johnson1602714140778
Robert Stone1601756167901
Tobin J. Marks1591621111604
Joseph Wang158128298799
Ed Diener153401186491
Wei Zheng1511929120209
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023194
2022834
20217,499
20207,699
20197,294
20186,840