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Nanotechnology

Nanometrology

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Displaying 51 - 75 of 855

Certification of Standard Reference Material(R) 1992 / ERM(R)-FD305 Zeta Potential - Colloidal Silica (Nominal Mass Fraction 0.15 %)

November 24, 2020
Author(s)
Yannic Ramaye, Vikram Kestens, J. Charoud-Got, S. Mazoua, G. Auclair, Tae Joon Cho, Blaza Toman, Vincent A. Hackley, T. Linsinger
This report describes the production of SRM 1992/ERM-FD305, silica particles suspended in a borate buffer, certified for electrophoretic mobility and zeta potential by electrophoretic light scattering (ELS). This material was produced following ISO 17034

Towards data-driven next-generation transmission electron microscopy

October 26, 2020
Author(s)
Steven R. Spurgeon, Colin Ophus, Lewys Jones, Amanda K. Petford-Long, Sergei Kalinin, Matthew J. Olszta, Rafal Dunin-Borkowski, Norman Salmon, Khalid Hattar, Wei-Chang Yang, Renu Sharma, Yingge Du, Ann Chiaramonti Debay, Haimei Zheng, Edgar C. Buck, Libor Kovarik, R. Lee Penn, Dongsheng Li, Xin Zhang, Mitsuhiro Murayama, Mitra D. Taheri
The rapidly evolving field of electron microscopy touches nearly every aspect of modern life, underpinning impactful materials discoveries in applications such as quantum information science, energy, and medicine. As the field enters a new decade, a

The Impact and Fate of Graphene Oxide in Graphene Oxide/Polymer Nanocomposites Exposed to Ultraviolet Irradiation

August 11, 2020
Author(s)
David G. Goodwin, Trinny Lai, Yadong Lyu, Chen Yuan Lu, Alejandro Campos, Vytautas Reipa, Tinh Nguyen, Li Piin Sung
Ultraviolet (UV) radiation, heat and moisture can lead to polymer degradation outdoors but the effect of graphene oxide (GO) nanofiller incorporation on this process is unknown. Since GO can improve the mechanical, barrier, and thermal properties of a

Brightly Luminescent CsPbBr3 Nanocrystals through Ultracentrifugation

July 30, 2020
Author(s)
Jeffrey Fagan, Erik K. Hobbie, Aaron Forde, Richard D. Schaller, salim thomas, samuel brown, Matthew B. Kurtti, dmitri kilin
Colloidal lead-halide-perovskite nanocrystals (NCs) offer broad color tunability with bright photoluminescence (PL), fast lifetime, and narrow spectral linewidth. Because emission is tuned primarily through chemical composition, quantum confinement and

Crystallographic Polarity Measurements in Two-Terminal GaN Nanowire Devices by Lateral Piezoresponse Force Microscopy

July 23, 2020
Author(s)
Matthew Brubaker, Alexana Roshko, Samuel Berweger, Paul T. Blanchard, Todd E. Harvey, Norman A. Sanford, Kristine Bertness
Lateral piezoresponse force microscopy (L-PFM) is demonstrated as a reliable method for determining the crystallographic polarity of individual, dispersed GaN nanowires that were functional components in electrical test structures. In contrast to PFM

Achieving meV tunneling resolution in an in-operando scanning tunneling microscopy, atomic force microscopy, and magnetotransport system for quantum materials research

July 6, 2020
Author(s)
Johannes Schwenk, Sungmin Kim, Julian Berwanger, Fereshte Ghahari Kermani, Daniel T. Walkup, Marlou R. Slot, Son T. Le, W. G. Cullen, Steven R. Blankenship, Sasa Vranjkovic, Hans Hug, Young Kuk, Franz Giessibl, Joseph A. Stroscio
Research in new quantum materials require multi-mode measurements spanning length scales, correlations of atomic scale variables with macroscopic function, and with an ultimate energy resolution only obtainable at ultra-low temperatures, typically in a

Comparison of three essential submicron aerosol measurements: mass, size and shape

May 28, 2020
Author(s)
Qi Yao, Akua Asa-Awuku, Christopher D. Zangmeister, James Radney
An instrumental trifecta now exists for aerosol separation and classification by mobility diameter (Dm), aerodynamic diameter (Dae) and mass (mp) utilizing a differential mobility analyzer (DMA), aerodynamic aerosol classifier (AAC) or aerosol particle

Infrared and Raman chemical imaging and spectroscopy at the nanoscale

May 19, 2020
Author(s)
Dmitry Kurouski, Alexandre Dazzi, Renato Zenobi, Andrea Centrone
The advent of nanotechnology, and the need to understand the chemical composition at the nanoscale, has stimulated the convergence of IR and Raman spectroscopy with scanning probe methods, resulting in new nanospectroscopy paradigms. Here we review two of

Photocurrent detection of the orbital angular momentum of light

May 15, 2020
Author(s)
Zhurun Ji, Wenjing Liu, Sergiy Krylyuk, Xiaopeng Fan, Zhifeng Zhang, Anlian Pan, Liang Feng, Albert Davydov, Ritesh Agarwal
Utilizing the orbital angular momentum (OAM) of light is promising for increasing the bandwidth of optical communication networks. However, direct photocurrent detection of different OAM modes has not yet been demonstrated. Most studies on current

X-Ray Metrology of Nanowire/ Nanosheet FETs for Advanced Technology Nodes

March 30, 2020
Author(s)
Madhulika S. Korde, Regis J. Kline, Daniel Sunday, Nick Keller, Subhadeep Kal, Cheryl Alix, Aelen Mosden, Alain C. Diebold
The three-dimensional architectures for field effect transistors (FETs) with vertical stacking of Gate-all-Around Nanowires provide a pathway to increased device density and superior electrical performance. However, the transition from research into

Wear comparison of critical dimension-atomic force microscopy tips

March 28, 2020
Author(s)
Ndubuisi G. Orji, Ronald G. Dixson, Ernesto Lopez, Bernd Imer
Nanoscale wear affects the performance of atomic force microscopy (AFM)-based measurements for all applications including process control, nanoelectronics characterization and topography measurements. As such, methods to prevent or reduce AFM tip wear is

Optimal in situ electromechanical sensing of molecular species

January 21, 2020
Author(s)
Maicol A. Ochoa, Michael P. Zwolak
We investigate protocols for optimal molecular detection with electromechanical nanoscale sensors in ambient conditions. Our models are representative of suspended graphene nanoribbons, which due to their piezoelectric and electronic properties, provide

Sizing up the Next Generation of Nanomedicines

December 11, 2019
Author(s)
Jeffrey D. Clogston, Vincent A. Hackley, Adriele Prina-Mello, Sanyogitta Puri, Silvia Sonzini, Patrick Lim Soo
During the past two decades the field of nanomedicines has experienced significant progress. To date, over sixty nanoparticle (NP) formulations have been approved in the US and EU while many others are in clinical or preclinical development, indicating a

Characterization of Size and Aggregation for CNC Dispersions Separated by Asymmetrical-flow Field-flow Fractionation

December 9, 2019
Author(s)
Jeremie Parot, Arnab K. Mukherjee, Martin Couillard, Maohui Chen, Shan Zou, Vincent A. Hackley, Linda Johnston
Cellulose nanocrystals derived from various types of cellulose biomass have significant potential for applications that take advantage of their availability from renewable natural resources and their high mechanical strength, biocompatibility and ease of

Evaluating performance, degradation, and release behavior of a nanoform pigmented coating after natural and accelerated weathering

December 6, 2019
Author(s)
Ronald S. Lankone, David G. Goodwin, Li Piin Sung, Emmanuel Ruggiero, Klaus Vilsmeier, Philipp Mueller, Sorin Pulbere, Katie Challis, Yuqiang Bi, Paul Westerhoff, James Ranville, David H. Fairbrother, Wendel Wohlleben
Pigments with nanoscale dimensions are added to exterior coatings to achieve desirable color and gloss properties. The present study compared the performance, degradation, and release behavior of an acrylic coating that was pigmented by a nanoform of Cu
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