Results 131 to 140 of about 472,688 (313)

A comparative study on properties and uncertainty principles of fractional Fourier transform and offset fractional Fourier transform

Results in Applied Mathematics
This work deals with the offset fractional Fourier transform (OFrFT), which is a more general version of the fractional Fourier transform (FrFT). We demonstrate the basic properties such as translation, modulation and parity.
Mawardi Bahri, Airien Nabilla B.A., Nasrullah Bachtiar, Muhammad Zakir   +3 more
doaj   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Image denoising with directional bases [PDF]

, 2007
Directional information is an important component of both natural and synthetic images, and it is exploited in many image processing applications. Directional basis analysis is used to capture significant structural information.
Park, Heechan, Martin, Graham R., Yao, Zhen, HASH(0x55a67f8c3860)   +3 more
core  

Dispersive Fourier transform based dual-comb ranging

Nature Communications
Laser-based light detection and ranging (LIDAR) offers a powerful tool to real-timely map spatial information with exceptional accuracy and owns various applications ranging from industrial manufacturing, and remote sensing, to airborne and in-vehicle ...
Bing Chang, Teng Tan, Junting Du, Xinyue He, Yupei Liang, Zihan Liu, Chun Wang, Handing Xia, Zhaohui Wu, Jindong Wang, Kenneth K. Y. Wong, Tao Zhu, Lingjiang Kong, Bowen Li, Yunjiang Rao, Baicheng Yao   +15 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Advanced electronics for fourier-transform ion cyclotron resonance mass spectrometry [PDF]

With the development of mass spectrometry (MS) instruments starting in the late 19th century, more and more research emphasis has been put on MS related subjects, especially the instrumentation and its applications.
Lin, Tzu-Yung
core  

Microfabricated Anisotropic Myobundles for the Scalable Production of Cardiac Tissue Grafts

Advanced Functional Materials, EarlyView.
Controlling the anisotropy of cardiac tissue remains an outstanding challenge in the field of cardiac tissue engineering. Here, we introduce an approach to generate anisotropic cardiac myobundles using cell‐adhesive, synthetic, electrospun fibers and stem cell‐derived cardiac fibroblasts.
Maggie E. Jewett, Javiera Jilberto, Margaret E. Stanley, David O. Ntim, Siddhi M. Bhirud, Avianna T. Schroeder, Gonzola X. Anyosa Galvez, Jingyi Xia, Samuel J. DePalma, Emmanouil Agrafiotis, Susan S. Xi, Amanda S. Bluem, Courtney M. Lestock, Adam S. Helms, David A. Nordsletten, Brendon M. Baker   +15 more
wiley   +1 more source

High mass accuracy analytical applications of Fourier transform ion cyclotron resonance mass spectrometry [PDF]

The performance capabilities of Fourier transform ion cyclotron resonance (FTICR) mass spectrometry are higher than any other type of mass spectrometer, making this technique suitable for a range of analytical applications.
Wills, Rebecca Helen
core  

A 64-point Fourier transform chip for high-speed wireless LAN application using OFDM

, 2004
In this article, we present a novel fixed-point 16-bit word-width 64-point FFT/IFFT processor developed primarily for the application in the OFDM based IEEE 802.11a Wireless LAN (WLAN) baseband processor.
Jagdhold, U, Grass, E, Maharatna, K, Jagdhold, Ulrich, Maharatna, Koushik, Grass, Eckhard   +5 more
core   +1 more source

Improved Performances in Point-to-Multipoint Flexible Optical Transceivers Utilizing Cascaded Discrete Fourier Transform-Spread Inverse Fast Fourier Transform/Fast Fourier Transform-Based Multi-Channel Aggregation/De-Aggregation

Photonics
The previously proposed cascaded inverse fast Fourier transform/fast Fourier transform (IFFT/FFT)-based point-to-multipoint (P2MP) flexible optical transceivers have the potential to equip future intensity modulation and direct detection (IMDD) optical ...
Lin Chen, Yingxue Gao, Wei Jin, Han Yang, Shenming Jiang, Shu Liu, Yi Huang, Jianming Tang   +7 more
doaj   +1 more source