U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Albert Davydov (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 51 - 75 of 184

Fabrication of 3D Printed Hydroxyapatite Composite Scaffolds for Bone Regeneration

May 19, 2021
Author(s)
Yoontae Kim, Eun-Jin Lee, Albert Davydov, Stanislav Frakhtbeyen, Jonathan Seppala, Laurence Chow, Tagaki Shozo, Stella Alimperti
Additive biomanufacturing has been adapted in a wide variety of biomedical and tissue engineering applications, including orthopedics. The ability to print biocompatible, patient-specific geometries with controlled porosity, mechanical strength has made

Substrate-mediated hyperbolic phonon polaritons in MoO3

February 15, 2021
Author(s)
Jeffrey Schwartz, Son T. Le, Sergiy Krylyuk, Curt A. Richter, Albert Davydov, Andrea Centrone
Hyperbolic phonon polaritons (HPhPs) are hybrid excitations of light and coherent charge oscillations that exist in strongly optically anisotropic, two-dimensional materials (e.g., MoO3). These polaritons propagate through the material's volume with long

Thermomagnetic properties of Bi2Te3 single crystal in the temperature range from 55 K to 380 K

January 21, 2021
Author(s)
Md S. Akhanda, S. Emad Rezaei, Keivan Esfarjani, Sergiy Krylyuk, Albert Davydov, Mona Zebarjadi
Magneto-thermoelectric transport provides an understanding of coupled electron-hole-phonon current in topological materials and has applications in energy conversion and cooling. In this work, we investigate the effects of an external magnetic field ( 3 T)

On-the-fly closed-loop materials discovery via Bayesian active learning

November 24, 2020
Author(s)
Aaron Gilad Kusne, Heshan Yu, Huairuo Zhang, Jason Hattrick-Simpers, Brian DeCost, Albert Davydov, Leonid A. Bendersky, Apurva Mehta, Ichiro Takeuchi
Active learning—the field of machine learning (ML) dedicated to optimal experiment design—has played a part in science as far back as the 18th century when Laplace used it to guide his discovery of celestial mechanics. In this work, we focus a closed-loop

The joint automated repository for various integrated simulations (JARVIS) for data-driven materials design

November 12, 2020
Author(s)
Kamal Choudhary, Kevin Garrity, Andrew C. Reid, Brian DeCost, Adam Biacchi, Angela R. Hight Walker, Zachary Trautt, Jason Hattrick-Simpers, Aaron Kusne, Andrea Centrone, Albert Davydov, Francesca Tavazza, Jie Jiang, Ruth Pachter, Gowoon Cheon, Evan Reed, Ankit Agrawal, Xiaofeng Qian, Vinit Sharma, Houlong Zhuang, Sergei Kalinin, Ghanshyam Pilania, Pinar Acar, Subhasish Mandal, David Vanderbilt, Karin Rabe
The Joint Automated Repository for Various Integrated Simulations (JARVIS) is an integrated infrastructure to accelerate materials discovery and design using density functional theory (DFT), classical force-fields (FF), and machine learning (ML) techniques

Localized Excitons in NbSe2-MoSe2 Heterostructures

July 8, 2020
Author(s)
Jaydeep Joshi, Tong Zhou, Sergiy Krylyuk, Albert Davydov, Igor Zutic, Patrick M. Vora
Neutral and charged excitons (trions) in atomically-thin materials offer important capabilities for photonics, from ultrafast photodetectors to highly-efficient lightemitting diodes and lasers. Recent studies of van der Waals (vdW) heterostructures

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

In situ transport measurements reveal source of mobility enhancement of MoS2 and MoTe2 during dielectric deposition

April 21, 2020
Author(s)
Ju Ying Shang, Michael J. Moody, Jiazhen Chen, Sergiy Krylyuk, Albert Davydov, Tobin J. Marks, Lincoln J. Lauhon
Layered transition metal dichalcogenides (TMDs) and two-dimensional (2D) materials are widely studied as complements to Si complementary metal-oxide-semiconductor technology. Field-effect transistors (FETs) made with 2D materials often exhibit mobilities

Comparable Enhancement of TERS signals from WeSe2 on Chromium and Gold.

April 6, 2020
Author(s)
Albert Davydov, Sergiy Krylyuk, Angela R. Hight Walker, Bojan R. Ilic, Andrey Krayev, Ashish Bhattarai, Alan G. Joly, Matej Velicky, Patrick Z. El-Khoury
Plasmonic tip-sample junctions, at which the incident and scattered optical fields are localized and optimally enhanced, are often exploited to achieve ultrasensitive and highly spatially localized tip-enhanced Raman scattering (TERS). Recent work has

Doping of MoTe2 via surface charge-transfer in ambient air

March 19, 2020
Author(s)
Gheorghe Stan, Cristian Ciobanu, Sri Ranga Jai Likith, Asha Rani, Sergiy Krylyuk, Albert Davydov
Doping is a key process that facilitates the use of semiconductors for electronic and optoelectronic devices, by which the concentration and type of majority carriers (electrons or holes) can be modified controllably to achieve desired conduction

Valley Phenomena in the Candidate Phase Change Material WSe2(1-x)Te2x

January 15, 2020
Author(s)
Sean M. Oliver, Joshua Young, Sergiy Krylyuk, Thomas L. Reinecke, Albert Davydov, Patrick M. Vora
Alloyed transition metals dichalcogenides (TMDs) provide the unique opportunity for coupling band engineering and valleytronic phenomena in an atomically-thin platform. However, valley properties remain largely unexplored in TMD alloys. Here, we

Dielectric properties of Nb_x}W_1-x}Se_2} alloys

December 16, 2019
Author(s)
Albert Rigosi, Heather M. Hill, Sergiy Krylyuk, Nhan V. Nguyen, Angela Hight Walker, Albert Davydov, David Newell
The growth of transition metal dichalcogenide (TMDC) alloys provides an opportunity to experimentally access information elucidating how optical properties change with gradual substitutions in the lattice compared with their pure compositions. In this work

Near-infrared photonic phase-change properties of transition metal ditellurides.

September 23, 2019
Author(s)
Albert Davydov, Sergiy Krylyuk, Yifei Li, Akshay Singh, Rafael Jaramillo
We use the (Mo,W)Te2 system to explore the potential of transition metal dichalcogenides (TMDs) as phasechange materials for integrated photonics. We measure the complex optical constant of MoTe2 in both the 2H and 1T’ phases by spectroscopic ellipsometry

Automated Mechanical Exfoliation of MoS2 and MoTe2 Layers for 2D Materials Applications

September 13, 2019
Author(s)
Albert Davydov, Sergiy Krylyuk, Kyle J. DiCamillo, Makarand Paranjape, Wendy Shi
An automated technique is presented for mechanically exfoliating single-layer and few-layer transition metal dichalcogenides using controlled shear and normal forces imposed by a parallel plate rheometer. A thin sample that is removed from bulk MoS2 or

Thermal Stability of Titanium Contacts to MoS2

August 30, 2019
Author(s)
Huairuo Zhang, Albert Davydov, Leonid A. Bendersky, Keren M. Freedy, Stephen J. McDonnell
Thermal annealing of Ti contacts is commonly implemented in the fabrication of MoS2 devices however its effects on interface chemistry have not been previously reported in the literature. In this work, the thermal stability of titanium contacts deposited

MoS2 cleaning by acetone and UV-Ozone: Geological vs. synthetic material (Letter)

January 25, 2019
Author(s)
Keren M. Freedy, Sales G. Maria, Sergiy Krylyuk, Albert Davydov, Stephen J. McDonnell
The effects of poly(methyl methacrylate) PMMA removal procedures on the surface chemistry of both geological and chemical vapor deposited (CVD) MoS2 are investigated. X-ray photoelectron spectroscopy is employed following acetone dissolution, thermal

An Ultra-fast Multi-level MoTe2-based RRAM

January 17, 2019
Author(s)
Albert Davydov, Leonid A. Bendersky, Sergiy Krylyuk, Huairuo Zhang, Feng Zhang, Joerg Appenzeller, Pragya R. Shrestha, Kin P. Cheung, Jason P. Campbell
We report multi-level MoTe2-based resistive random-access memory (RRAM) devices with switching speeds of less than 5 ns due to an electric-field induced 2H to 2Hd phase transition. Different from conventional RRAM devices based on ionic migration, the

Black phosphorus tunneling field-effect transistors

December 21, 2018
Author(s)
Albert Davydov, Huairuo Zhang, Leonid A. Bendersky
Band-to-band tunneling field-effect transistors (TFETs)1-7 have emerged as promising candidates to replace conventional metal-oxide-semiconductor field-effect transistors (MOSFETs) for low-power integration circuits and have been demonstrated to overcome

Electric field induced phase transition in vertical MoTe2 and Mo1-xWxTe2 based RRAM devices

December 10, 2018
Author(s)
Feng Zhang, Sergiy Krylyuk, Huairuo Zhang, Cory A. Milligan, Dmitry Y. Zemlyanov, Leonid A. Bendersky, Albert Davydov, Joerg Appenzeller, Benjamin P. Burton, Yugi Zhu
Transition metal dichalcogenides have attracted attention as potential building blocks for various electronic applications due to their atomically thin nature and polymorphism. Here, we report an electric-field-induced structural transition from a 2H

Control of polarity in multilayer MoTe2 field-effect transistors by channel thickness

November 9, 2018
Author(s)
Albert Davydov, Mona Zaghloul, Sergiy Krylyuk, Ratan K. Debnath, Asha Rani, Kyle J. DiCamillo, Payam Taheri
In this study, electronic properties of field-effect transistors (FETs) fabricated from exfoliated MoTe2 single crystals are investigated as a function of channel thickness. The conductivity type in FETs gradually changes from n-type for thick MoTe2 layers

Predicting synthesizability

October 24, 2018
Author(s)
Albert Davydov, Ursula R. Kattner
Advancements in multiscale multi-physics computational materials design have led to accelerated discovery of advanced materials for energy, electronics and engineering applications. For most bulk materials synthesizing and processing procedures are

Electronic Characteristics of MoSe2 and MoTe2 for Nanoelectronic Applications

October 15, 2018
Author(s)
Asha Rani, Shiqi Guo, Sergiy Krylyuk, Albert Davydov
Single-crystalline MoSe2 and MoTe2 platelets were grown by Chemical Vapor Transport (CVT), followed by exfoliation, device fabrication, optical and electrical characterization. We observed that for the field-effect-transistor (FET) channel thickness in
Was this page helpful?