Results 91 to 100 of about 1,798,139 (280)

Highly Sensitive Broadband Photodetectors Based on Donor–Acceptor 2D Conjugated Coordination Polymers

Advanced Materials, EarlyView.
Donor–acceptor molecular design and chemical vapor deposition growth enable the two‐dimensional nickel‐tetraaminobenzoquinone films with strong broadband absorption and efficient charge separation. The resulting photodetectors exhibit a structured broadband response with a high responsivity of ∼3.1 A W−1 and a response time of ∼170 µs, which surpasses ...
Yunxu Chen, Jinxin Liu, Shuai Fu, Apurba Mahapatra, Dongxu Wang, Mike Hambsch, Angelika Wrzesińska‐Lashkova, Jing Wang, Fabian Paulus, Yana Vaynzof, Stefan C. B. Mannsfeld, Fuchun Zhang, Mischa Bonn, Renhao Dong, Xinliang Feng   +14 more
wiley   +1 more source

Discrete Fourier Transform Windowing Techniques for Cerebral Physiological Research in Neural Injury: A Practical Demonstration. [PDF]

Neurotrauma Rep, 2023
Froese L, Sainbhi AS, Gomez A, Marquez I, Amenta F, Batson C, Stein KY, Zeiler FA.   +7 more
europepmc   +1 more source

Pulsed Oxidative–Reductive Electrolysis Over Dual Cu and Co Single‐Atom Sites for Urea Electrosynthesis

Advanced Materials, EarlyView.
Alternating oxidative–reductive pulses synchronize CO2‐derived *CO and NH3‐derived *NHx intermediates over dual Cu and Co single‐atom sites, enabling urea and ethyl urea formation with a total C─N Faradaic efficiency of 42 ± 4%. In situ spectroscopy and theoretical calculations elucidate complementary Cu and Co functions, while oxidative controls ...
Putri Ramadhany, Peiqi Qiu, Thành Trần‐Phú, Denny Gunawan, Bernt Johannessen, Rosalie K. Hocking, Yan Jiao, Rose Amal, Rahman Daiyan   +8 more
wiley   +1 more source

An efficient discrete Hankel transform based on convolutional Gaussian fast Fourier transform

Earth, Planets and Space
The numerical evaluation of Hankel transforms is fundamental to electromagnetic (EM) geophysics. Typically, this problem is addressed via two distinct paradigms: the digital linear filter (DLF) method, prioritized for its computational speed, and direct ...
Guanzheng Tian, Yuguo Li
doaj   +1 more source

Private Discrete Fourier Transform With Applications to Linear Convolution

IEEE Access
We study the problem of computing the discrete Fourier transform (DFT) on data secret-shared to two non-colluding cloud servers. While DFT in plaintext is typically computed using floating-point arithmetic, secure computation of DFT requires the use of ...
Mohammad Nabil Ahmed, Kana Shimizu
doaj   +1 more source

A Wavelet-Wavelet Based Processing Approach for Microcalcifications Detection in Mammograms

Journal of Advances in Information Technology, 2012
A new methodology for the detection of microcalcifications (MCs) in mammograms is presented. Since MCs correspond to the high frequency components of the mammograms, a further multiresolution analysis is applied to these components.
Salim Lahmiri
doaj   +1 more source

Zero-Watermarking for Vector Maps Combining Spatial and Frequency Domain Based on Constrained Delaunay Triangulation Network and Discrete Fourier Transform. [PDF]

Entropy (Basel), 2023
Xi X, Hua Y, Chen Y, Zhu Q.
europepmc   +1 more source

Advances in Bio‐Integrated Edge Computing Systems for Smart and Connected Health

Advanced Materials, EarlyView.
This review explores advances in bio‐integrated edge computing for healthcare, focusing on co‐designing computing, sensing, and energy strategies to overcome integration and power challenges for optimized, decentralized operation. ABSTRACT Recent advances in bio‐integrated healthcare technologies have enabled continuous, high‐resolution monitoring and ...
Gyuwon Kim, Seungwon Yoo, Tae Woog Kang, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Hilbert-Twin – A Novel Hilbert Transform-Based Method To Compute The Elastic Modulus In High-Resolution Mechanical Spectroscopy HRMS

Archives of Metallurgy and Materials, 2015
A novel Hilbert-twin (H-twin) method is introduced as an alternative method for the computation of the resonant frequency for exponentially damped free decays embedded in noise.
Majewski M., Magalas L.B.
doaj   +1 more source

Discrete Fourier Transform with Denoise Model Based Least Square Wiener Channel Estimator for Channel Estimation in MIMO-OFDM. [PDF]

Entropy (Basel), 2022
S D, Palanisamy S, Hajjej F, Khalaf OI, Abdulsahib GM, S R.   +5 more
europepmc   +1 more source