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Showing 1 to 12 of 149 entries
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Developing a Continuous, Rather Than Binary, Classification for Measuring STEM Jobs

Stem education interventions

CARMICHAEL T, STAMPER J.
GSID: KSqG-HMURqEJ
T CARMICHAEL, J STAMPER… - CTE-STEM 2022 …, 2022 - proceedings.open.tudelft.nl

This paper presents our review and synthesis of the literature on STEM classification, and our results for a novel approach towards understanding, categorizing, and tracking STEM attributes in the workplace. We found two deficiencies in the way STEM is...

Low-frequency noise in individual carbon nanotube field-effect transistors with top, side and back gate configurations: effect of gamma irradiation.

Nanotechnology

Sydoruk VA, Goß K, Meyer C, Petrychuk MV, Danilchenko BA, Weber P, Stampfer C, Li J, Vitusevich SA.
PMID: 24345726
Nanotechnology. 2014 Jan 24;25(3):035703. doi: 10.1088/0957-4484/25/3/035703. Epub 2013 Dec 17.

We report on the influence of low gamma irradiation (10(4) Gy) on the noise properties of individual carbon nanotube (CNT) field-effect transistors (FETs) with different gate configurations and two different dielectric layers, SiO2 and Al2O3. Before treatment, strong generation-recombination...

Ultrahigh-mobility graphene devices from chemical vapor deposition on reusable copper.

Science advances

Banszerus L, Schmitz M, Engels S, Dauber J, Oellers M, Haupt F, Watanabe K, Taniguchi T, Beschoten B, Stampfer C.
PMID: 26601221
Sci Adv. 2015 Jul 31;1(6):e1500222. doi: 10.1126/sciadv.1500222. eCollection 2015 Jul.

Graphene research has prospered impressively in the past few years, and promising applications such as high-frequency transistors, magnetic field sensors, and flexible optoelectronics are just waiting for a scalable and cost-efficient fabrication technology to produce high-mobility graphene. Although significant...

Spatial Control of Laser-Induced Doping Profiles in Graphene on Hexagonal Boron Nitride.

ACS applied materials & interfaces

Neumann C, Rizzi L, Reichardt S, Terrés B, Khodkov T, Watanabe K, Taniguchi T, Beschoten B, Stampfer C.
PMID: 26986938
ACS Appl Mater Interfaces. 2016 Apr 13;8(14):9377-83. doi: 10.1021/acsami.6b01727. Epub 2016 Mar 31.

We present a method to create and erase spatially resolved doping profiles in graphene-hexagonal boron nitride heterostructures. The technique is based on photoinduced doping by a focused laser beam and does neither require masks nor photoresists. This makes our...

Dietary selenium in humans toenails as an indicator.

Biological trace element research

Steven Morris J, Stampfer MJ, Willett W.
PMID: 24263672
Biol Trace Elem Res. 1983 Dec;5(6):529-37. doi: 10.1007/BF02988944.

Mounting laboratory and epidemiologic evidence suggests that selenium may be important in the etiology of both cancer and heart disease. We explored the use of hair and nails as indicators of selenium intake by measuring their selenium levels using...

Spatially resolved Raman spectroscopy of single- and few-layer graphene.

Nano letters

Graf D, Molitor F, Ensslin K, Stampfer C, Jungen A, Hierold C, Wirtz L.
PMID: 17297984
Nano Lett. 2007 Feb;7(2):238-42. doi: 10.1021/nl061702a.

We present Raman spectroscopy measurements on single- and few-layer graphene flakes. By using a scanning confocal approach, we collect spectral data with spatial resolution, which allows us to directly compare Raman images with scanning force micrographs. Single-layer graphene can...

Re: Secret ties to industry and conflicting interests in cancer research.

American journal of industrial medicine

Stampfer MJ.
PMID: 17315182
Am J Ind Med. 2007 Mar;50(3):238. doi: 10.1002/ajim.20444.

No abstract available.

Pseudopath semiclassical approximation to transport through open quantum billiards: Dyson equation for diffractive scattering.

Physical review. E, Statistical, nonlinear, and soft matter physics

Stampfer C, Rotter S, Burgdörfer J, Wirtz L.
PMID: 16241564
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Sep;72(3):036223. doi: 10.1103/PhysRevE.72.036223. Epub 2005 Sep 30.

We present a semiclassical theory for transport through open billiards of arbitrary convex shape that includes diffractively scattered paths at the lead openings. Starting from a Dyson equation for the semiclassical Green's function we develop a diagrammatic expansion that...

Non-scientists could still contribute to reform of the ERC.

Nature

Krull W, Edler J, Stampfer M.
PMID: 19713910
Nature. 2009 Aug 27;460(7259):1079. doi: 10.1038/4601079d.

No abstract available.

Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature.

Nano letters

Drögeler M, Volmer F, Wolter M, Terrés B, Watanabe K, Taniguchi T, Güntherodt G, Stampfer C, Beschoten B.
PMID: 25291305
Nano Lett. 2014 Nov 12;14(11):6050-5. doi: 10.1021/nl501278c. Epub 2014 Oct 07.

We present a new fabrication method of graphene spin-valve devices that yields enhanced spin and charge transport properties by improving both the electrode-to-graphene and graphene-to-substrate interface. First, we prepare Co/MgO spin injection electrodes onto Si(++)/SiO2. Thereafter, we mechanically transfer...

When less is more - efficacy with less toxicity at the ED50.

British journal of clinical pharmacology

Dimmitt S, Stampfer H, Martin JH.
PMID: 28387051
Br J Clin Pharmacol. 2017 Jul;83(7):1365-1368. doi: 10.1111/bcp.13281. Epub 2017 Apr 06.

No abstract available.

Integrated impedance bridge for absolute capacitance measurements at cryogenic temperatures and finite magnetic fields.

The Review of scientific instruments

Verbiest GJ, Janssen H, Xu D, Ge X, Goldsche M, Sonntag J, Khodkov T, Banszerus L, von den Driesch N, Buca D, Watanabe K, Taniguchi T, Stampfer C.
PMID: 31472650
Rev Sci Instrum. 2019 Aug;90(8):084706. doi: 10.1063/1.5089207.

We developed an impedance bridge that operates at cryogenic temperatures (down to 60 mK) and in perpendicular magnetic fields up to at least 12 T. This is achieved by mounting a GaAs HEMT amplifier perpendicular to a printed circuit...

Showing 1 to 12 of 149 entries