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Lifei Zhang

Tsinghua University

Beijing, 100084

China

SCHOLARLY PAPERS

12

DOWNLOADS

636

TOTAL CITATIONS

0

Scholarly Papers (12)

1.

Study on Groove Structure Design and Flow Field Characteristics of CMP Polishing Pad Based on Multi-Scale Simulation

Number of pages: 32 Posted: 17 Oct 2025
Lifei Zhang, Nanhao Zhao, Hui Ci and Xinchun Lu
Tsinghua University, affiliation not provided to SSRN, affiliation not provided to SSRN and Tsinghua University
Downloads 97 (725,554)

Abstract:

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Chemical mechanical polishing, Numerical analysis, polishing pad, Mixed lubrication

2.

Non-Contact Post-Cmp Megasonic Cleaning of Cobalt Wafers

Number of pages: 16 Posted: 04 Nov 2022
Lifei Zhang, Xinchun Lu and Ahmed A. Busnaina
Tsinghua University, Tsinghua University and Northeastern University (USA)
Downloads 91 (777,583)

Abstract:

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Cobalt Wafers, Post-CMP Megasonic Cleaning, Nanoparticle Removal Mechanisms, Interactive Effects

3.

Effect of Ionic Surfactants in Ceria-Based Slurries on Shallow Trench Isolation Chemical Mechanical Polishing

Number of pages: 26 Posted: 02 Mar 2023
Lifei Zhang, Lile Xie and Xinchun Lu
Tsinghua University, Tsinghua University and Tsinghua University
Downloads 79 (816,709)

Abstract:

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Keywords: Chemical Mechanical Polishing, Shallow Trench Isolation, Ceria-based Slurries, Ionic Surfactants.

4.

Research on Polishing Mechanisms of Various Surfactants in Chemical Mechanical Polishing Relevant to Cobalt Interconnects

Number of pages: 20 Posted: 03 Feb 2023
Tsinghua University, Tsinghua University, Tsinghua University and Tsinghua University
Downloads 76 (830,555)

Abstract:

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Cobalt Interconnects, Chemical Mechanical Polishing, Heterogeneous Materials, Various Surfactants, Polishing Mechanisms.

5.

Atomic-scale study on nanoparticle removal mechanism during post-Cu CMP cleaning process using ReaxFF MD

Number of pages: 38 Posted: 04 Sep 2025
Tsinghua University, Tsinghua University, Beijing Technology and Business University, Tsinghua University, Beijing Technology and Business University and Beijing Technology and Business University
Downloads 59 (1,020,567)

Abstract:

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Post-Cu CMP cleaning, Reactive force field molecular dynamics, silica nanoparticle deposition, silica nanoparticle removal.

6.

Particle removal behavior of composite surfactants during the post-CMP cleaning process for Co-patterned wafers

Number of pages: 21 Posted: 08 Dec 2025
Lifei Zhang, Mei Yan and Xinchun Lu
Tsinghua University, Tsinghua University and Tsinghua University
Downloads 51 (1,157,785)

Abstract:

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Cobalt, Post-CMP cleaning, Composite surfactant, Particle removal mechanism, Quantum chemical calculation

7.

The Role of Diethanolamine on Chemical Mechanical Polishing in Alkaline Glycine-Based Slurries for Cobalt Interconnects

Number of pages: 20 Posted: 02 Dec 2022
Tsinghua University, Tsinghua University, Tsinghua University and Tsinghua University
Downloads 46 (1,121,190)

Abstract:

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Cobalt Interconnects, Chemical Mechanical Polishing, Diethanolamine, Auxiliary Complexing Agent, Corrosion Inhibitor

8.

Exploring the Cleaning Performance of Compound Surfactants in Post-Cmp Cleaning for Co Interconnects

Number of pages: 24 Posted: 26 Sep 2024
Lifei Zhang, Mei Yan and Xinchun Lu
Tsinghua University, Tsinghua University and Tsinghua University
Downloads 40 (1,209,354)

Abstract:

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Cobalt, post-CMP cleaning, Composite surfactant, Particle removal mechanism, Quantum chemical calculation

9.

Mechanisms of Multiple Functional Groups in Post-Cmp Cleaning Solutions for Co Interconnects

Number of pages: 21 Posted: 05 Sep 2024
Lifei Zhang, Mei Yan and Xinchun Lu
Tsinghua University, Tsinghua University and Tsinghua University
Downloads 33 (1,290,922)

Abstract:

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Cobalt interconnects, Post-CMP cleaning, Functional groups, Particle removal, Cleaning mechanisms

10.

Effects Of Process Parameters and Pattern Densities on the Performance of Two-Step Chemical Mechanical Polishing for Cobalt Interconnects

Number of pages: 17 Posted: 19 Aug 2024
Lifei Zhang and Xinchun Lu
Tsinghua University and Tsinghua University
Downloads 24 (1,399,036)

Abstract:

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Cobalt interconnects, Chemical mechanical polishing, Patterned wafer, Pattern line width/spacing/density.

11.

Exploring the Mechanisms of Compound Surfactants in Post Cmp Cleaning Process for Co Interconnects

Number of pages: 22 Posted: 13 May 2025
Lifei Zhang, Xinchun Lu, Dewen Zhao and Mei Yan
Tsinghua University, Tsinghua University, Tsinghua University and Tsinghua University
Downloads 22 (1,436,435)

Abstract:

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Cobalt, Post CMP cleaning, Composite surfactant, Particle removal mechanism, Quantum chemical calculation

12.

Effects of Process Parameters and Pattern Densities on the Performance of Two-Step Chemical Mechanical Polishing for Cobalt Interconnects

Number of pages: 17 Posted: 21 Aug 2024
Lifei Zhang and Xinchun Lu
Tsinghua University and Tsinghua University
Downloads 18 (1,470,786)

Abstract:

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Cobalt interconnects, Chemical mechanical polishing, Patterned wafer, Pattern line width/spacing/density