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Keith A. Brown
Researcher at Boston University
Publications - 119
Citations - 3634
Keith A. Brown is an academic researcher from Boston University. The author has contributed to research in topics: Dielectrophoresis & Nanolithography. The author has an hindex of 32, co-authored 105 publications receiving 2759 citations. Previous affiliations of Keith A. Brown include International Institute of Minnesota & Northwestern University.
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Capillary bridge rupture in dip-pen nanolithography.
TL;DR: The exploration of fluid transfer from a nanoscale tip to a surface and elucidate the role of fluid flows in dip-pen nanolithography (DPN) of liquid inks finds that while fluid transfer in this context is affected by dwell time and tip retraction speed, their specific roles are dictated by the contact angle of the ink on the surface.
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Locally Altering the Electronic Properties of Graphene by Nanoscopically Doping It with Rhodamine 6G
TL;DR: It is shown that Rhodamine 6G (R6G), patterned by dip-pen nanolithography on graphene, can be used to locally n-dope it in a controlled fashion and this behavior is consistent with local molecular doping, highlighting a path for controlling the electronic properties of graphene with nanoscale resolution.
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Modulating the Bond Strength of DNA–Nanoparticle Superlattices
TL;DR: It is found that intercalator charge and steric profile serve as handles that give a wide range of tunability and control over DNA-NP bond strength, with the resulting crystal lattices retaining their structure at temperatures more than 50 °C above what nonintercalated structures can withstand.
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A cantilever-free approach to dot-matrix nanoprinting
Keith A. Brown,Daniel J. Eichelsdoerfer,Wooyoung Shim,Boris Rasin,Boya Radha,Xing Liao,Abrin L. Schmucker,Guoliang Liu,Chad A. Mirkin +8 more
TL;DR: A cantilever-free SPL architecture that can generate 100 nanometer-scale molecular features using a 2D array of independently actuated probes is reported, addressing fundamental limitations of 2D SPL by allowing one to compensate for unavoidable imperfections in the system.
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Scaling of transverse nuclear magnetic relaxation due to magnetic nanoparticle aggregation.
Keith A. Brown,Christophoros C. Vassiliou,David Issadore,Jesse Berezovsky,Michael J. Cima,Robert M. Westervelt +5 more
TL;DR: The aggregation of superparamagnetic iron oxide (SPIO) nanoparticles decreases the transverse nuclear magnetic resonance (NMR) relaxation time T2CP of adjacent water molecules measured by a Carr-Purcell-Meiboom-Gill (CPMG) pulse-echo sequence, which implies that it may be possible to sense the orientation of a two-nanoparticle aggregate.