Results 41 to 50 of about 12,722 (195)

Spin States in Graphene Quantum Dots

open access: yes, 2010
We investigate ground and excited state transport through small (d = 70 nm) graphene quantum dots. The successive spin filling of orbital states is detected by measuring the ground state energy as a function of a magnetic field.
C. Stampfer   +5 more
core   +1 more source

Modeling Color and Chemical Changes in Pork Loin During Controlled Roasting: Browning in Focus

open access: yesJournal of Food Process Engineering, Volume 49, Issue 1, January 2026.
Controlled roasting of pork loin revealed how crust formation and color evolution depend on temperature and moisture. Predictive models accurately captured browning, lipid oxidation, and Maillard reaction, offering insights for optimizing roasting conditions and improving product quality in meat processing.
Mariane Wolf   +5 more
wiley   +1 more source

Evidence for coexistence of the superconducting gap and the pseudo - gap in Bi-2212 from intrinsic tunneling spectroscopy

open access: yes, 2000
We present intrinsic tunneling spectroscopy measurements on small Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ mesas. The tunnel conductance curves show both sharp peaks at the superconducting gap voltage and broad humps representing the $c$-axis pseudo-gap.
A. V. Puchkov   +30 more
core   +1 more source

Voltage-controlled Group Velocity of Edge Magnetoplasmon in the Quantum Hall Regime [PDF]

open access: yes, 2010
We investigate the group velocity of edge magnetoplasmons (EMPs) in the quantum Hall regime by means of time-of-flight measurement. The EMPs are injected from an Ohmic contact by applying a voltage pulse, and detected at a quantum point contact by ...
H. Kamata   +6 more
core   +1 more source

A study of transport suppression in an undoped AlGaAs/GaAs quantum dot single-electron transistor

open access: yes, 2013
We report a study of transport blockade features in a quantum dot single-electron transistor, based on an undoped AlGaAs/GaAs heterostructure. We observe suppression of transport through the ground state of the dot, as well as negative differential ...
Aagesen, M.   +5 more
core   +1 more source

Photodoping strategies in two‐dimensional semiconductors: Mechanisms, characterizations, and emerging applications

open access: yesInfoMat, Volume 7, Issue 12, December 2025.
Photodoping has emerged as a promising alternative, offering non‐destructive, reversible, and highly tunable performance modulation of atomically thin two‐dimensional (2D) materials while overcoming the limitations of traditional silicon‐based doping methods.
Zhe Zhang   +7 more
wiley   +1 more source

Poliovirus mutant that contains a cold-sensitive defect in viral RNA synthesis [PDF]

open access: yes, 1988
By manipulating an infectious cDNA clone of poliovirus, we have introduced a single-codon insertion into the 3A region of the viral genome which has been proposed to encode a functional precursor of the virion-linked protein VPg. The resulting mutant was
Baltimore, David, Bernstein, Harris D.
core  

Single-hole transistor in p-type GaAs/AlGaAs heterostructures

open access: yes, 2005
A single-hole transistor is patterned in a p-type, C-doped GaAs/AlGaAs heterostructure by AFM oxidation lithography. Clear Coulomb blockade resonances have been observed at T=300 mK.
Andreas D. Wieck   +6 more
core   +1 more source

Rewiring NLRs for Broad and Cross‐Species Plant Immunity

open access: yesModern Agriculture, Volume 3, Issue 2, December 2025.
Synthetic design and cross‐species transfer strategies to broaden NLR‐mediated plant immunity. Left panel: Wang et al. engineered NLRs with viral protease cleavage sites (PCS) that are activated upon cleavage by pathogen‐derived proteases, enabling broad‐spectrum resistance against multiple potyviruses in diverse hosts, including tobacco (Nb) and ...
Jianjian Liu, Qian Gong
wiley   +1 more source

Tunable Coulomb blockade in nanostructured graphene

open access: yes, 2007
We report on Coulomb blockade and Coulomb diamond measurements on an etched, tunable single-layer graphene quantum dot. The device consisting of a graphene island connected via two narrow graphene constrictions is fully tunable by three lateral graphene ...
C. Stampfer   +8 more
core   +1 more source

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