Atomic force microscope (AFM) is an important nano-scale surface characterization and measurement method. Raster scanning method (RSM), widely used in AFMs, faces limitations on scanning speed and imaging accuracy. In this paper, an isotropic linear scanning method (ILSM) is proposed to improve the AFM imaging performance. Inspired by Chinese knot, ILSM is constructed by integrating two iterative triangular scanning trajectories in X and Y axes, similar to triangular Lissajous. Compared with the other scanning methods, ILSM features isotropic scanning trajectory across the scanning region. It is also easy to increase either the scanning speed or scanning resolution using ILSM. Subsequently, to address the hysteresis associated with the piezoelectric actuator, a new tracking algorithm is proposed by combining adaptive Kalman filtering and direct inverse modeling approach. Finally, AFM imaging experiments are conducted to validate the effectiveness of the proposed method. It can be found that the artifacts in RSM can be efficiently eliminated using the proposed method, thus improving the imaging quality.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ultramic.2024.114081 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of urinary density as a biomarker for the diagnosis of acute heart failure.
PeerJ
January 2025
Department of Nephrology, Ministry of Health Tarsus State Hospital, Mersin, Turkey.
Background: Heart failure (HF) has become a public healthcare concern with significant costs to countries because of the aging world population. Acute heart failure (AHF) is a common condition faced frequently in emergency departments, and patients often present to hospitals with complaints of breathlessness. The patient must be evaluated with anamnesis, physical examination, blood, and imaging results to diagnose AHF.
View Article and Find Full Text PDFFully automated coronary artery calcium score and risk categorization from chest CT using deep learning and multiorgan segmentation: A validation study from National Lung Screening Trial (NLST).
Int J Cardiol Heart Vasc
February 2025
Department of Radiology, Frimley Park Hospital NHS Foundation Trust, Camberley, Surrey, UK.
Background: The National Lung Screening Trial (NLST) has shown that screening with low dose CT in high-risk population was associated with reduction in lung cancer mortality. These patients are also at high risk of coronary artery disease, and we used deep learning model to automatically detect, quantify and perform risk categorisation of coronary artery calcification score (CACS) from non-ECG gated Chest CT scans.
Materials And Methods: Automated calcium quantification was performed using a neural network based on Mask regions with convolutional neural networks (R-CNN) for multiorgan segmentation.
Three-dimensional printed anatomical models as an educational tool for orthopaedic surgical trainees - A single institution experience.
J Clin Orthop Trauma
March 2025
Department of Orthopaedic Surgery, Tan Tock Seng Hospital, 11 Jln Tan Tock Seng, Singapore, 308433, Singapore.
Objective: To evaluate the utility of three-dimensional (3D) anatomical models as an educational tool among Orthopaedic surgical trainees.
Methods: Seven types of 3D anatomical models - humerus, elbow, ankle, calcaneum, knee, femur, and pelvis- based on patients' computational tomography (CT) scans were printed in the study institution and used by surgical trainees preoperatively. Responses were collected in the form of a Likert scale questionnaire.
The anterior offset of the standard entry point for tibial intramedullary nails: A transparent 3D-CT image based analysis.
J Orthop
August 2025
Department of Orthopaedic Surgery, Oita University Hospital, Japan.
Background: This study examines the relationship between the anterior offset of the tibial intramedullary nail (TIN) entry point and the tibial shaft axis to enhance the fit and alignment of TINs, using transparent 3D-CT in an accurate lateral view to minimize rotational artifacts.
Methods: Data were collected from 100 adult patients undergoing tibial CT scans. Measurements included the anterior offset from the tibial axis to the entry point, tibial tubercle offset, tibial plateau length, posterior slope, tibial length, isthmus diameter, and the isthmus-to-tibial length ratio.
Long-term Impact of Carotid Endarterectomy on Choroidal and Choriocapillaris Perfusion: The INFLATE Study.
Ophthalmol Sci
November 2024
Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida.
Purpose: When performed for clinically significant carotid artery stenosis (CAS), the long-term impact of carotid endarterectomy (CEA) on choroidal and choriocapillaris (CC) circulation was studied using swept-source OCT angiography.
Design: Prospective observational study.
Participants: Patients with clinically significant CAS undergoing unilateral CEA.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!