Exfoliation of Graphite to Graphene by Interface Stabilization

    公开(公告)号:US20230257271A1

    公开(公告)日:2023-08-17

    申请号:US17674389

    申请日:2022-02-17

    CPC classification number: C01B32/19 C03C25/44 C03C2218/328

    Abstract: Systems and methods are provided that may utilize a glass substrate to selectively withdraw exfoliated graphene from a high-energy interface between immiscible solvents. The exfoliated graphene preferentially adheres to the surface of the glass substrate for withdrawal from the noted high energy interface, leaving behind the graphite (which is too large to be effectively adsorbed relative to the glass substrate). The disclosed systems and methods are easily implemented and offer significant advantages for graphene production relative to conventional systems and methods, e.g., the disclosed systems/methods do not require the input of heat or mechanical energy which translates to processes that are both cheaper to run and do not result in damage to the graphene. Still further, the disclosed systems/methods do not require chemical modification of the graphene, again lowering the cost considerably and not damaging the graphene structure.

    Two-Dimensional Sheet Stabilized Emulsion Based Inks

    公开(公告)号:US20230235186A1

    公开(公告)日:2023-07-27

    申请号:US18102389

    申请日:2023-01-27

    Abstract: The present disclosure provides advantageous sheet stabilized emulsion based inks, and improved methods for fabricating and using such inks. More particularly, the present disclosure provides improved methods for fabricating conductive inks derived from water-in-oil emulsions stabilized by sheets exfoliated from layered materials (e.g., substantially pristine and non-oxidized graphite or hexagonal boron nitride), and related methods of use. A layered material (e.g., substantially pristine and non-oxidized graphite or hexagonal boron nitride) can be exfoliated into individual sheets, and these sheets can be utilized to stabilize water-in-oil emulsions. In certain embodiments, by utilizing long chain alkanes (e.g., hexadecane), one can advantageously fabricate emulsions with high viscosity and stability. In this form, the emulsions can be used as inks, thereby advantageously providing an inexpensive route to printing electrically conducting and/or insulating lines and shapes.

    METHODS, SYSTEMS, AND DEVICES FOR STREAMING VIDEO CONTENT UNDER DATA BUDGET CONSTRAINTS USING AVAILABLE ADAPTIVE BIT-RATE (ABR) TRACK INFORMATION

    公开(公告)号:US20230067019A1

    公开(公告)日:2023-03-02

    申请号:US17463820

    申请日:2021-09-01

    Abstract: Aspects of the subject disclosure may include, for example, obtaining data budget for a communication session, identifying video content associated with the communication session, and determining a group of segments associated with the video content. Further embodiments can include determining a segment size for each of the group of segments, identifying a base track for each segment of the group of segments based on the segment size for each segment of the group of segments and the data budget, and identifying a target track for each segment of the group of segments based on the base track for each segment of the group of segments, the segment size for each segment of the group of segments, and the data budget. Additional embodiments can include providing a request for the target track for each segment to a video content server over a communication network. Other embodiments are disclosed.

    METHODS, SYSTEMS, AND APPARATUSES FOR THE DETECTION OF OXYGEN TOXICITY RELATED SYMPTOMS

    公开(公告)号:US20230023197A1

    公开(公告)日:2023-01-26

    申请号:US17865105

    申请日:2022-07-14

    Abstract: Methods, systems and apparatuses for determining oxygen toxicity in users is disclosed. Electrodermal activity (EDA) data from a sensor may be received. The EDA data may be indicative of one or more physiological signals derived from sweat gland activity of the user. Time-varying index values may be determined based on the EDA data. The time-varying index values may be compared to a threshold to determine if one or more of the values satisfies the threshold. Satisfying the threshold may indicate oxygen toxicity is occurring within the user. A notification may be caused to occur based on the time-varying index value satisfying the threshold. The notification may cause the user to take actions to reduce the potential for further oxygen toxicity.

    ELECTROCHROMIC MATERIALS; PREPARATION AND USE THEREOF

    公开(公告)号:US20220396728A1

    公开(公告)日:2022-12-15

    申请号:US17748392

    申请日:2022-05-19

    Abstract: Disclosed herein are new electrochromic materials, including small molecule, oligomeric, and polymeric electrochromic materials, and compositions comprising the electrochromic materials and a salt. Further disclosed are electrochromic devices prepared from the electrochromic materials and electrochromic material compositions. Also disclosed are melt processable polymeric electrochromic materials, melt processable compositions comprising the melt processable polymeric electrochromic material, and a salt; and devices prepared therefrom.

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