A Materials Scientist's Case for Open Borders in Semiconductor Research

Recognition Amid Tension

Elsa Reichmanis received one of China's highest honors for foreign experts in late July, an acknowledgment of decades spent advancing the materials science that underpins semiconductor manufacturing. The timing was pointed. Her award arrives as Washington expands restrictions on technology sharing, particularly in domains tied to advanced chips, and as universities across the United States face mounting pressure to audit foreign research ties.

Reichmanis, who holds a professorship in chemical engineering at Lehigh University and directs its materials research institute, used the moment to articulate a position increasingly at odds with policy momentum in both capitals. Science, she told attendees, functions as a universal language, its progress reliant on the free movement of ideas and talent across borders. The benefits, she argued, accrue not to individual nations but to society broadly construed.

At DailyTechWire, we've tracked the steady contraction of research collaboration between American and Chinese institutions since 2020. Co-authored papers in semiconductor physics and materials engineering have declined by nearly a third, according to bibliometric data, while visa processing times for Chinese graduate students in STEM fields have stretched from weeks to months. Reichmanis's remarks cut against that grain.

The Lehigh Trajectory

Reichmanis built her reputation on photoresist chemistry, the light-sensitive materials that allow patterns to be etched onto silicon wafers during chip fabrication. Her work in the 1980s and 1990s contributed to the resolution improvements that enabled Moore's Law to hold for another two decades. That lineage gives her voice weight in debates over how foundational research should be governed.

Lehigh, a mid-sized private university in Pennsylvania's Lehigh Valley, has positioned itself as a hub for polymer science and advanced materials. The institute Reichmanis leads draws graduate students and postdoctoral researchers from across Asia, Europe, and Latin America. Several of her current collaborators hold dual appointments at institutions in South Korea and Taiwan, both critical nodes in the global semiconductor supply chain.

The university has not been immune to scrutiny. Federal agencies now require detailed disclosures of foreign funding and affiliations, and Lehigh, like its peers, has implemented compliance protocols that add administrative layers to international partnerships. Reichmanis has navigated that environment while maintaining her argument that the underlying science remains non-rival: advances in polymer morphology or defect mitigation benefit Samsung and TSMC as much as Intel or Micron.

The Boundaries of Openness

Her position raises a question that policymakers in Washington and Brussels have struggled to answer cleanly: where does foundational research end and strategic advantage begin? Export controls traditionally drew that line at the point of militarization or direct commercial application. A paper on electron beam lithography techniques, for instance, would fall outside restrictions; a manufacturing process optimized for 3-nanometer nodes might not.

That distinction has blurred. The CHIPS and Science Act, passed in 2022, includes guardrails that limit recipients of federal subsidies from expanding advanced semiconductor capacity in China for a decade. The Commerce Department's October 2023 update to export controls added new categories of chipmaking equipment and tightened restrictions on U.S. persons providing support to Chinese fabs. Both measures reflect a view that even early-stage research can confer advantages that compound over time.

Reichmanis's counterargument hinges on the idea that the scientific commons, once enclosed, becomes less productive for everyone. Materials breakthroughs often emerge from unexpected directions: a polymer chemist in Nanjing might solve a problem that has stymied a team in Eindhoven, and vice versa. Restricting that exchange, she suggests, slows the pace of innovation in ways that hurt American competitiveness as much as it constrains rivals.

That logic has adherents in parts of the semiconductor industry, particularly among firms that rely on global talent pipelines and collaborative R&D. It has fewer allies in the national security apparatus, where the working assumption is that technological leadership in chips translates directly into military and economic leverage.

Talent Flows and University Pressures

The friction plays out most visibly in graduate programs. Chinese nationals account for roughly 30 percent of doctoral students in U.S. electrical engineering and materials science departments, a share that has held steady even as visa approval rates have fluctuated. Those students often return to China after completing their degrees, taking with them expertise and networks that fuel the growth of domestic semiconductor firms.

Some U.S. lawmakers have proposed tighter restrictions on access to sensitive research areas, including photonics, advanced packaging, and heterogeneous integration. Universities have pushed back, arguing that such measures would undermine their ability to attract top talent and maintain research output. Reichmanis's award, and her public defense of collaboration, can be read as part of that broader institutional resistance.

Yet the pressures are real. Lehigh and other research universities now face audits of foreign gifts and contracts, with penalties for non-compliance. Faculty members with active collaborations in China report longer review times for grant applications and heightened scrutiny of conference travel. The cumulative effect, according to several department chairs we've spoken with, is a chilling of the informal exchanges that often precede formal partnerships.

A Diverging Consensus

Reichmanis's stance reflects a generational and disciplinary divide. Senior scientists who came of age during the Cold War détente tend to view open research as both a moral imperative and a practical necessity. Younger researchers, particularly those working in areas flagged as dual-use, are more accustomed to operating within a framework of controls and disclosures.

The divide also tracks along disciplinary lines. Materials scientists and chemists, whose work sits further upstream from end products, are more likely to defend openness. Engineers focused on process integration or device architecture, whose innovations translate more directly into manufacturing advantages, are more accepting of restrictions.

China's own policies complicate the picture. Beijing has invested heavily in domestic semiconductor research, funneling subsidies to universities and state-backed labs while restricting outbound data flows and tightening oversight of foreign collaborations. That asymmetry, critics argue, makes reciprocal openness a losing proposition for the United States.

Reichmanis has not addressed that critique directly, at least not in her public remarks surrounding the award. Her argument remains pitched at the level of principle: that the scientific method depends on transparency, replication, and critique, all of which require cross-border exchange. Whether that principle can survive the current policy environment is an open question, one that will shape the trajectory of semiconductor research for the next decade.