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Henkel Adhesive Technologies

Henkel Adhesive Technologies

High-speed, high-density data center design

Pushing data speeds to new heights while packing more power into smaller spaces, today’s engineers are redefining what's possible—tackling signal integrity, mechanical precision, and materials innovation to build the future of high-speed, high-density infrastructure.

Andrew Sun
Key Account Manager - Data/Telecom

4 min.

Today’s data infrastructure is being pushed to the edge by tomorrow’s ever-increasing performance demands. As networks and data centers transition to 800G and 1.6T systems, engineers face the formidable challenge of delivering exponentially greater throughput—often within the same or even smaller physical footprints. This rapid evolution brings a convergence of critical design challenges where signal integrity, mechanical reliability, and manufacturing precision intersect, compounded by the realities of increasingly dense hardware configurations.

High internet visualization projection in datacenter

High speed, high stakes

With data rates climbing faster than ever, traditional copper interconnects are rapidly reaching their limits. Problems such as high-frequency signal degradation, impedance mismatches, and electromagnetic interference (EMI) have become central design considerations—not peripheral issues.

To address these challenges, emerging architectures like co-packaged optics (CPO) and near-package optics are gaining traction. By placing optical engines directly adjacent to ASICs, these approaches significantly shorten electrical pathways, resulting in improved signal quality and reduced power loss. However, these benefits come with trade-offs: engineers must now achieve unprecedented mechanical precision in packaging and assembly to maintain alignment and performance. This has introduced a new layer of complexity, demanding tighter tolerances and innovative packaging techniques to maintain optical and electrical performance at scale.

Density drives complexity

This is the image of blue network cables in a data center

As performance targets rise, so do the pressures to pack more components—ports, compute units, optical transceivers—into the same physical space. This densification pushes layout design beyond two dimensions, evolving into a complex three-dimensional puzzle that requires balancing multiple factors simultaneously:

  • Electrical pathways: high-frequency signals require careful routing to minimize crosstalk, signal loss, and reflections.
  • Mechanical stress points: Tighter packaging leads to increased sensitivity to vibration, thermal expansion, and mechanical shock, all of which can degrade performance or cause failure.
  • Thermal and airflow management: Dense layouts complicate heat dissipation, forcing designers to innovate cooling strategies while maintaining system reliability.

Within these constraints, every design decision carries significant weight. Component placement is no longer just about functionality but also about how materials used in assembly will behave under increasingly demanding mechanical and thermal stresses. Ensuring structural integrity without compromising signal integrity requires an intimate understanding of material properties and interactions within miniaturized environments.

The critical role of materials engineering

In these high-density, high-speed environments, the role of materials science has grown from a background consideration to a central pillar of system performance and reliability. As electrical signals become more sensitive and mechanical tolerances tighten, the materials used for bonding, encapsulating, and protecting components must meet increasingly stringent requirements:

  • Mechanical stability under tight tolerances: adhesives and structural materials need to maintain dimensional stability to prevent misalignments that can cause signal degradation or optical losses. Even microscopic shifts can have outsized impacts.
  • Durability over time: materials must resist mechanical fatigue, creep, and degradation caused by repeated thermal cycling, vibration, and environmental exposure. Long-term reliability is critical in mission-critical telecom and data center equipment.
  • Signal integrity preservation: material formulations must minimize electromagnetic interference and mechanical vibrations that can disrupt sensitive high-frequency signals, ensuring consistent performance throughout the product lifecycle.
  • Compatibility with manufacturing processes: materials must also support advanced manufacturing and assembly techniques without introducing defects such as outgassing, contamination, or shrinkage during curing.

As contact areas between components shrink and the margin for error narrows, materials engineering is no longer just about joining parts—it’s about enabling and sustaining performance at scale.

In the race to meet ever-growing bandwidth and density demands, engineers must rethink traditional design paradigms. High-speed, high-density systems are no longer just about faster signals or smaller footprints—they require a deep integration of electrical, mechanical, and materials engineering disciplines to deliver truly reliable and scalable performance.

Resources

  • This is a futuristic concept image of a server in a data center.

    Phase change interface materials for next-gen data center ICs

    This case study looks at how low-pressure, low thermal impedance, phase change thermal interface material provides a much-needed solution for next-gen data center ICs.

    10 min.

  • This image displays a micro thermal interface coating on a pluggable optical transceiver.

    Durable TIM coating reduces heat and improves data center switch performance

    This case study looks at how durable, thin thermal interface coating reduces heat and improves data center switch performance.

    10 min.

  • This is the frozen computer chip in a block of solid ice

    The heat is on

    Today, network performance, reliability, and durability are critical to datacom and telecom performance around the world. And when network performance is largely determined by power and cooling, the role of thermal management is only going to increase.
  • This image shows city view of San Francisco

    Look small to go big

    In today’s world of unprecedented network and infrastructure expansion, the need for increased performance and stability is accelerating. This rapid expansion is further challenged by the need to process more data at faster speeds while also accommodating emerging technology developments.
  • This is an image of a network cable with fiber optical background

    The 2023 data center pulse report

    With an insatiable demand for faster networking speeds and throughput performance within the data center, 800 Gigabit Ethernet (GbE) is gaining momentum as the next big trend in networking to provide capacity to ever-growing customer demands.
  • This is an image of a man in a data center bending down

    The 2024 data center pulse report

    The influence of innovation and technology on the need to transition from 800G to 1.6T.

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