Scanning probe microscope with a sample holder fed with electromagnetic wave signals

    公开(公告)号:US11674976B2

    公开(公告)日:2023-06-13

    申请号:US17413662

    申请日:2019-12-13

    Applicant: ALCATERA LLC

    Inventor: Marco Farina

    CPC classification number: G01Q30/20 G01Q30/02

    Abstract: A scanning probe microscope including a holder having at least one electric port, wherein the holder is configured to support a sample to be imaged. The scanning probe microscope further includes a probe and an actuator configured to move at least one of the holder and the probe up to three directions. The scanning probe microscope further includes a reflectometer configured to measure reflection and/or transmission coefficients at each of the at least one electric ports of the holder by feeding each of the at least one electric ports of the holder with electromagnetic wave signals.

    METHOD AND APPARATUS FOR IDENTIFYING SAMPLE POSITION IN ATOMIC FORCE MICROSCOPE

    公开(公告)号:US20220206039A1

    公开(公告)日:2022-06-30

    申请号:US17561920

    申请日:2021-12-24

    Abstract: An apparatus and a method for identifying a sample position in an atomic force microscope according to an exemplary embodiment of the present disclosure are provided. The method for identifying a sample position in an atomic force microscope includes receiving a vision image including a subject sample through a vision unit; determining a subject sample region in the vision image using a prediction model which is configured to output the subject sample region by receiving the vision image as an input; and determining a position of the subject sample based on the subject sample region.

    FREQUENCY COMB FEEDBACK CONTROL FOR SCANNING PROBE MICROSCOPY

    公开(公告)号:US20210302466A1

    公开(公告)日:2021-09-30

    申请号:US17251650

    申请日:2019-07-23

    Inventor: Mark J. Hagmann

    Abstract: In order to meet the needs of, in particular, the semi-conductor industry as it requires finer lithography nodes, a method of feedback control for scanning probe microscopy generates a microwave frequency comb of harmonics in a tunneling junction (10) between a probe tip electrode (80) and sample electrode (20) by irradiating the junction with mode-locked pulses of electromagnetic radiation from a laser (90). Utilizing power measurements within one or more harmonics within the microwave frequency comb, the tip-sample distance in the tunneling junction may be regulated by a feedback control (40) utilizing an extremum-seeking algorithm for maximum efficiency and avoid tip crash when used with resistive samples. Ideally, no externally provided DC bias is required to use the method. Utilization of this method contributes to true sub-nanometer resolution of images of carrier distribution in resistive samples such as semi-conductors.

    Sample container mounting member and sample container sealing method

    公开(公告)号:US10830791B2

    公开(公告)日:2020-11-10

    申请号:US16297138

    申请日:2019-03-08

    Abstract: A holding member, a sample container, and a mounting member are used in a scanning probe microscope. The mounting member is made of an elastically deformable material such as a rubber material. The mounting member includes an annular main body. When the mounting member is mounted on the holding member and the sample container, the holding member is inserted into the sample container while the main body of the mounting member is elastically deformed along an outer circumferential surface of the sample container. One end of the mounting member is detached from the outer circumferential surface of the sample container, and brought into close contact with an outer circumferential surface of the holding member. When the holding member and the sample container are relatively moved, the main body of the mounting member is elastically deformed.

    NON-LOCAL SCANNING PROBES FOR SCANNING PROBE MICROSCOPY

    公开(公告)号:US20190324055A1

    公开(公告)日:2019-10-24

    申请号:US16393367

    申请日:2019-04-24

    Abstract: The system is configured for performing scanning electrochemical microscopy via non-local continuous line probes. The continuous line probes include an insulating probe substrate, an insulating layer, and a conductive band electrode. The system includes a sample stage for positioning a sample substrate to be imaged so as to enable contact with the insulting probe substrate at an angle ΘCLP. The continuous line probe is translated across the sample substrate and changes in the signal generated at the continuous line probe are identified to indicate the presence of features on the sample substrate. A plurality of scans are performed at different angles via rotating the sample stage or the continuous line probe, the results of which are combined and analyzed to produce an image of the sample substrate via compressed sensing reconstruction. The resulting image has comparable resolution to those produced via conventional scanning electrochemical microscopy processes, but in less scan time and with less complex scanning hardware.

    METHOD FOR DETERMINING THE SHAPE OF A SAMPLE TIP FOR ATOM PROBE TOMOGRAPHY

    公开(公告)号:US20190277881A1

    公开(公告)日:2019-09-12

    申请号:US16296068

    申请日:2019-03-07

    Applicant: IMEC vzw

    Abstract: The disclosed technology relates to a method and apparatus for correctly positioning a probe suitable for scanning probe microscopy (SPM). The probe is positioned relative to the apex region of a needle-shaped sample, such as a sample for atom probe tomography, in order to perform a SPM acquisition of the apex region to obtain an image of the region. In one aspect, the positioning takes place by an iterative process, starting from a position wherein one side plane of the pyramid-shaped SPM probe interacts with the sample tip. By controlled consecutive scans in two orthogonal directions, the SPM probe tip approaches and finally reaches a position wherein a tip area of the probe interacts with the sample tip's apex region.

    Frequency Comb Feedback Control for Scanning Probe Microscopy

    公开(公告)号:US20180364278A1

    公开(公告)日:2018-12-20

    申请号:US16116479

    申请日:2018-08-29

    Inventor: Mark J. Hagmann

    CPC classification number: G01Q60/16 G01Q30/20 G01Q60/12 G01Q60/14

    Abstract: In order to meet the needs of the semi-conductor industry as it requires finer lithography nodes, a method of feedback control for scanning probe microscopy generates a microwave frequency comb of harmonics in a tunneling junction by irradiating the junction with mode-locked pulses of electromagnetic radiation. Utilizing power measurements within one or more harmonics, the tip-sample distance in the tunneling junction may be regulated for maximum efficiency and avoid tip crash when used with resistive samples. Optionally, no DC bias is required to use the method. Utilization of this method contributes to true sub-nanometer resolution of images of carrier distribution in resistive samples such as semi-conductors.

Patent Agency Ranking