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Displaying 1 - 25 of 1754

Signal size and resolution of scanning thermal microscopy in air and vacuum

April 1, 2025
Author(s)
Jabez McClelland, Evgheni Strelcov, Ami Chand
We present measurements comparing scanning thermal microscopy in air and vacuum. Signal levels are compared and resolution is probed by scanning over the edge of a nanofabricated Ag square embedded in SiO2. Signals measured in air were seen to be 2.5 to 40

Magneto-optics of a charge-tunable quantum dot: Observation of a negative diamagnetic shift

March 17, 2025
Author(s)
Giora Peniakov, A Beck, Eilon Poem, Zu-En Su, Boaz Taitler, Sven Hofling, Garnett Bryant, David Gershoni
We present magneto-optical studies of a self-assembled semiconductor quantum dot in neutral and positively charged states. The diamagnetic shifts and Zeeman splitting of many well identified optical transitions are precisely measured. Remarkably, a

Detection limits of AI-based SEM dimensional metrology

March 14, 2025
Author(s)
Peter Bajcsy, Brycie Wiseman, Michael Paul Majurski, Andras Vladar
The speed of in-line scanning electron microscope (SEM) measurements of linewidth, contact hole, and overlay is critically important for identifying the measurement area and generating indispensable process control information. Sample charging and damage

Scalable Bottom-Up Synthesis of Nanoporous Hexagonal Boron Nitride (h-BN) for Large-Area Atomically Thin Ceramic Membranes

February 14, 2025
Author(s)
Andrew Naclerio, Peifu Cheng, Saban Hus, John Diulus, Marti Checa, Ivan Vlassiouk, William Fissel, Liam Collins, Matthew Coupin, Jamie Warner, Andrei Kolmakov, An-Ping Li, Piran Ravichandran Kidambi
Nanopores embedded within monolayer hexagonal boron nitride (h-BN) offer possibilities of creating atomically thin ceramic membranes with unique combinations of high permeance (atomic thinness), high selectivity (via molecular sieving), increased thermal

Scattering Insights into Shear-Induced Scission of Rodlike Micelles

January 23, 2025
Author(s)
Guan-Rong Huang, Ryan Murphy, Lionel Porcar, Chi-Huan Tung, Changwoo Do, Wei-Ren Chen
Studying the scission of rodlike micelles under mechanical forces is essential for understanding their stability and behavior in industrial applications. Mechanical stress can fragment these micelles, impacting performance. Investigating this process

Materials Discovery in Combinatorial and High-throughput Synthesis and Processing: A New Frontier for SPM

January 5, 2025
Author(s)
Boris Slautin, Yungtao Liu, Yu Liu, Reece Emery, Seungbum Hong, Astita Dubey, Vladimir Shvartsman, Doru Lupascu, Sheryl Sanchez, Mahshid Ahmadi, Yunseok Kim, Evgheni Strelcov, Keith Brown, Philip Rack, Sergei Kalinin
For over three decades, scanning probe microscopy (SPM) has been a key method for exploring material structures and functionalities at nanometer and often atomic scales in ambient, liquid, and vacuum environments. Historically, SPM applications have

Ultrahigh reflectivity photonic crystal membranes with optimal geometry

July 30, 2024
Author(s)
Feng Zhou, Yiliang Bao, Jason Gorman, John R. Lawall
Photonic crystal (PhC) structures with subwavelength periods are widely used for diffractive optics, including high reflectivity membranes with nanoscale thickness. Here, we report on a design procedure for 2D PhC silicon nitride membrane mirrors providing

Morphologic alterations across three levels of biological organization following oral exposure to silver-polymer nanocomposites in Japanese medaka (Oryzias latipes)

July 5, 2024
Author(s)
Melissa Chernick, Alan Kennedy, Treye Thomas, Keana C. K. Scott, Joana Sipe, Christine Hendren, Mark Wiesner, David Hinton
Polymer nanocomposites have diverse industrial and commercial uses. While many toxicity studies have assessed the individual materials (e.g., polymer, nanomaterial) comprising nanocomposites, few have examined the potential toxicity of the nanocomposite as

Fully integrated multifunctional sensor and open-source ASIC for flexible wearables

June 25, 2024
Author(s)
Anhang Li, Hongyi Wu, Ashbir Aviat Fadila, Chanho Kye, Arvind Balijepalli, Johan Euphrosine, Tim Ansell, Nigel Coburn, Sachin Nadig, Mehdi Saligane
The open-source hardware movement has made significant progress over the past few years. Increasingly, more individuals are engaging with and participating in the open-source chip design community - not only to design their own chips with the available

Quantifying Mechanical Abrasion of AgNP Nanocomposites used in 3D Printing: Influence of AgNP content on abrasion products and rate of microplastic production

June 7, 2024
Author(s)
Joana Sipe, William Berger, Nathan Bossa, Melissa Chernick, Keana C. K. Scott, Alan Kennedy, Treye Thomas, Christine Ogilvie, Mark Wiesner
Nanomaterials are used in polymer composites to enhance plastic products' properties. Silver nanoparticles (AgNPs) are added to composites for their antimicrobial and fungicidal properties. Polyethylene terephthalate glycol polymer (PETG) AgNP composite

Dealloyed Pt74Ni26 and Pt26Ni74 Electrodeposited Thin Film Electrocatalysts for Oxygen Reduction

May 30, 2024
Author(s)
Carlos Hangarter, Eric Rus, Yihua Liu, Jaw Wook Shin, Vladimir Oleshko, Hyun Wook Ro, Russell Composto, Christopher Soles, Joseph A. Dura, Gery R. Stafford, Leonid Bendersky, Thomas P. Moffat
Pt100-xNix alloys are among the most active binary alloys for electrocatalysis of the oxygen reduction reaction (ORR) in PEM fuel cells. Electrodeposition and microstructure of thin films close to Pt75Ni25 and Pt25Ni75 stoichiometry are described and their

A 0.1 GHz to 1.1 THz Inverted Grounded-CPW mTRL Calibration Kit Characterization in an InP HBT Process

May 13, 2024
Author(s)
Jerome Cheron, Rob Jones, Dylan Williams, Miguel Urteaga, Bryan Bosworth, Nick Jungwirth, Jeffrey Jargon, Ben Jamroz, Chris Long, Nate Orloff, Ari Feldman, Peter Aaen
We report a novel design approach of on-wafer multiline thru-reflect-line (mTRL) calibration kit fabricated on a commercial semiconductor-based transistor process that we validate from 0.1 GHz to 1.1 THz. The on-wafer calibration standards are designed

Understanding the Origin and Implication of the Indirect-to-Direct Bandgap Transition in Multilayer InSe

May 2, 2024
Author(s)
Nicholas Pike, Ruth Pachter, Michael Altvater, Chris Stevens, Matthew Klein, Joshua Hendrickson, Huairuo Zhang, Sergiy Krylyuk, Albert Davydov, Nicholas Glavin
Indium selenide (InSe) multilayers have attracted much interest recently due to their electronic and optical properties, partially dependent on the existence of an indirect-to-direct bandgap transition that is correlated to the multilayer thickness. In

Thermoreversible gels of hollow silica nanorod dispersions

May 1, 2024
Author(s)
Haesoo Lee, KHUSHBOO SUMAN, David Moglia, Ryan Murphy, Norman Wagner
Colloidal suspensions of anisotropic particles are ubiquitous in particle-based industries. Consequently, there is a need to quantify the effects of particle shape on equilibrium phases and kinetic state transitions, particularly at lower aspect ratios (L
Displaying 1 - 25 of 1754